Casio PRW-B1000 User Manual

Contents

About This Watch

General Guide

Watch Face and Display Indicators

Navigating Between Modes

Mode Overview

Using the Crown

Shifting the Hands

Charging

Viewing the Face in the Dark

Useful Features

Linking with a Phone

Getting Ready

Auto Time Correction

Mode Customization

Recording Your Current Location (Location

Memory)

Checking the Distance and Bearing to a

Location Memory Point (Location Indicator)

Auto Altitude Calibration

Recording Waypoints and Their Altitudes

(Route Log)

Configuring World Time Settings

Adjusting Hand Alignment

Phone Finder

Configuring Watch Settings

Changing the Home City Summer Time Setting

Checking the Watch Charge Level

Recording Your Current Location

(TIME&PLACE)

Connection

Connecting with a Phone

Disconnecting the Watch from a Phone

Unpairing the Watch from a Phone

If you purchase another phone

Time Correction

Time Adjustment Using a Time Signal

Overview

Appropriate Signal Reception Location

Time Signal Reception Ranges

Auto Time Calibration Signal Receive

Enabling and disabling Auto Receive

Manual Time Calibration Signal Receive

Receive Level Indicator

Checking the Last Time Adjustment

Result

Signal Reception Precautions

Using Watch Operations to Adjust the Time

Setting

Using the Watch in a Medical Facility or

Aircraft

World Time

Using the CASIO WATCHES Phone App to

Configure World Time City Settings

Checking World Time

Setting the World Time City

Swapping Your Home Time and World Time

Moving Between Time Zones

Alarm

Using the CASIO WATCHES Phone App to

Configure Alarm Settings

Configuring Alarm Settings

Enabling the Hourly Time Signal

Turning Off an Alarm or the Hourly Time Signal

Watch Operation Guide 5741

MA2505-EA

OPUM-J

Published: 5/2025

Digital Compass

Taking a Compass Reading

Saving a Bearing to a Destination (Bearing

Memory)

Calibrating Compass Readings

Setting Up for True North Readings

(Magnetic Declination Calibration)

Digital Compass Reading Precautions

Altitude Measurement

Checking the Current Altitude

Calibrating Altitude Readings (Offset)

Checking the Altitude Differential from a

Reference Point

Setting the Auto Measurement Interval

Recording Altitude Readings

Specifying the Altitude Measurement Unit

Altitude Reading Precautions

Barometric Pressure

Measurement

Checking the Current Barometric Pressure

Checking Changes in Barometric Pressure

Over Time

Checking the Change in Barometric Pressure

between Two Readings

Sudden Barometric Pressure Change

Indications

Calibrating Barometric Pressure Readings

(Offset)

Specifying the Barometric Pressure Unit

Barometric Pressure Reading Precautions

Temperature Measurement

Checking the Current Temperature

Calibrating Temperature Readings (Offset)

Specifying the Temperature Measurement

Unit

Temperature Reading Precautions

Viewing Altitude Records

Viewing Recorded Data

Deleting Data

Sunrise and Sunset Times

Looking Up Today’s Sunrise and Sunset

Times

Looking Up Sunrise and Sunset Times by

Specifying a Day

Stopwatch

Measuring Elapsed Time

Measuring a Split Time

Timing the First and Second Place Finishers

Timer

Using the CASIO WATCHES Phone App to

Configure Timer Settings

Setting a Start Time

Using the Timer

Hand Alignment Adjustment

Using the CASIO WATCHES Phone App to

Adjust Hand Alignment

Adjusting Hand Alignment

Other Settings

Enabling the Button Operation Tone

Configuring Power Saving Function Settings

Resetting Watch Settings

Specifications

Other Information

City Table

Summer Time Table

Supported Phone Models

Copyrights and Registered Trademarks

Troubleshooting

Precautions

Operating Precautions

User Maintenance

Battery

Mobile Link Precautions

Watch Operation Guide 5741

About This Watch

This section provides an overview of the watch

and introduces convenient ways it can be

used.

●

Watch Features

●

Phone Linking

The watch supports connection and

communication with a Bluetooth capable

phone.

●

Solar Charging

Sunlight and artificial light generate

electricity for watch operation as it charges.

●

Time Signal Reception

The watch receives a radio signal

containing time information and uses it to

keep its time setting accurate.

●

World Time

World Time displays the current time in any

of 55 cities (38 time zones)* around the

globe and UTC.

* Subject to being updated when

connected with a phone.

●

Alarm

An alarm sounds whenever a time specified

by you is reached.

●

Digital Compass

You can use the Compass Mode to

determine the direction of north, and to

check your bearing to a destination.

●

Altitude Measurement

You can use this function to take an altitude

reading at your current location.

You can record the altitude, along with the

date and time of the measurement.

You can also measure the altitude

differential between two points.

●

Barometric Pressure Measurement

You can display the current barometric

pressure tendency, which helps you be on

the alert for noteworthy pressure changes.

●

Temperature Measurement

The watch can be used to take current air

temperature readings.

●

Viewing Altitude Records

You can view or delete records of altitude

measurements.

●

Sunrise and Sunset Times

You can look up the sunrise and sunset

times for a specified date.

●

Stopwatch

You can use the stopwatch to measure up

to 24 hours of elapsed time in units of 1/100

of a second.

●

Timer

Countdown from a start time specified by

you. An alarm sounds when the countdown

reaches zero.

Important!

●

This watch is not a special-purpose

measuring instrument. Measurement

function readings are intended for

general reference only.

●

Whenever using the Digital Compass

of this watch for serious trekking,

mountain climbing, or other activities,

be sure to always take along another

compass to confirm readings. If the

readings produced by the Digital

Compass of this watch are different

from those of the other compass,

perform 3-point calibration or figure 8

calibration of the watch compass to

correct direction measurement.

ー　

Compass readings and calibration

will not be possible if the watch is in

the vicinity of a permanent magnet

(magnetic accessory, etc.), metal

objects, high-voltage wires, aerial

wires, or electrical household

appliances (TV, computer,

cellphone, etc.)

Digital Compass

●

The watch’s altimeter function

calculates and displays relative

altitude based on barometric pressure

readings produced by its pressure

sensor. Because of this, altitude

values displayed by the watch may be

different from your actual elevation

and/or sea level elevation indicated for

the area where you are located.

Regular calibration in accordance with

the local altitude (elevation)

indications is recommended.

Altitude Measurement

Note

●

The illustrations included in this

operation guide have been created to

facilitate explanation. An illustration

may differ somewhat from the item it

represents.

General Guide

④

⑥

⑦

②①

⑧

③ ⑤

A　Function hand

B　Hour hand

C　Second hand

D　Minute hand

E　Bearing hand

F　Day of the week

G　Month, day

H　Crown

A button

Pressing this button in the Timekeeping Mode

enters the Altimeter Mode.

B button

Each press cycles between watch modes.

In any mode, hold down this button for at least

two seconds to return to the Timekeeping

Mode.

C button

Pressing this button in the Timekeeping Mode

enters the Compass Mode.

D button

Pressing this button in the Timekeeping Mode

cycles between displays.

E button

Press to turn on illumination.

Watch Operation Guide 5741

Watch Face and Display

Indicators

⑩

⑥

⑪⑫ ⑬

⑦⑧ ⑨

②①③

④

⑤

A　The function hand indicates the altitude or

barometric pressure difference.

B　The function hand indicates the current

charge level after you enter the

Timekeeping Mode.

C　The bearing hand indicates the bearing to

a destination (in Bearing Memory) or to a

location you recorded (in Location

Memory).

D　When the watch is connected with a

phone, the second hand points to

E　The second hand points to [RC] while the

watch is standing by for connection with a

phone.

F　Displayed when an alarm is turned on.

G　Appears when the hourly time signal is on.

H　Displayed when the indicated time is

summer time.

I　Displayed while barometric pressure

change indication is enabled.

J　Shows the barometric pressure

measurement unit.

K　Flashes while the watch’s hands are

shifted for easier reading.

L　Displayed while Route Log is enabled.

M　Displayed after time adjustment using

time signal reception or connection with a

phone was successful.

The [RCVD] indicator will disappear in the

cases below.

●

After you use watch operations to

change Home City settings (time and

date, city, summer time)

●

After the watch switches between

standard time and summer time

●

After a time signal receive operation

fails

●

After a phone-based time adjustment

operation fails

Navigating Between Modes

Your watch has the modes shown below.

●

To return to the Timekeeping Mode from

any other mode, hold down (B) for at least

two seconds.

BCBA

Altimeter Mode

Receive Mode

Timekeeping Mode

Barometer Mode

Thermometer Mode

World Time Mode

Altitude Record Recall

Mode

Alarm Mode

Sunrise/Sunset Mode

Stopwatch Mode

Timer Mode

Compass Mode

Use the buttons in the illustration above to

navigate between modes.

Watch Operation Guide 5741

Mode Overview

●

Timekeeping Mode

In this mode, the digital display shows the

current day of the week, month, and day.

You can also use (D) to scroll display contents

through the items below.

●

Barometric pressure graph, month, day

●

Hour, minute, second

Day of the week, month, day

Barometric pressure

graph, month, day

Hour, minute, second

Barometric pressure graph

Note

●

To perform operations with CASIO

WATCHES, you first need to pair the

watch with the phone where the app is

installed.

Pair the watch with a phone.

●

Altimeter Mode

Use this mode to take an altitude reading for

your current location.

Altitude Measurement

③②

①

Remeasure

A　Altitude differential indicator

B　Altitude graph

C　Altitude

●

Compass Mode

Use this mode to take direction and bearing

angle readings.

Digital Compass

③ ④

①②

Remeasure

Objective

A　North indication

B　Bearing Memory/Location Memory

Bearing

C　Bearing at 12 o’clock

D　Bearing angle at 12 o’clock

●

Barometer Mode

Use this mode to take barometric pressure

readings at your current location.

Barometric Pressure Measurement

③②

①

Remeasure

A　Pressure Differential Indicator

B　Barometric pressure graph

C　Barometric pressure

●

Thermometer Mode

Use this mode to take temperature readings

at your current location.

Temperature Measurement

①

Remeasure

A　Temperature

●

Altitude Record Recall Mode

Use this mode to view altitude records.

Viewing Altitude Records

①

Data search

A　Number of the record displayed last time

the Altitude Record Recall Mode was

used

●

Sunrise/Sunset Mode

Use this mode to check the sunrise and sunset

times for your Home City.

Sunrise and Sunset Times

③②①

⑤

④

Date search

A　Year, month, day

B　Sunrise time

C　Sunrise indicator

D　Sunset time

E　Sunset indicator

Watch Operation Guide 5741

●

Stopwatch Mode

Use this mode to measure elapsed time.

Stopwatch

①

④

② ③

Start/Stop

Split/reset

A　Stopwatch hours

B　Stopwatch minutes

C　Stopwatch seconds

D　Stopwatch: 1/100 second

●

Timer Mode

Use this mode to countdown from a desired

start time.

Timer

②①

Start/Stop

Reset

A　Timer minutes

B　Timer seconds

●

Alarm Mode

The watch will beep when an alarm time is

reached.

Alarm

②①

②

③

Select alarm/

hourly time signal

Select alarm/

hourly time signal

On/off

A　Alarm number

B　Alarm or hourly time signal status (on/off)

C　Alarm hour/minute

●

World Time Mode

This mode shows the current time in 55 cities

and UTC (Coordinated Universal Time) time.

World Time

③

①

②

Show current city

A　Home City time

B　World Time City

C　World Time City current time

●

Receive Mode

With this mode, you can receive a time signal

manually.

Time Adjustment Using a Time Signal

①

A　Receive level indicator

Connecting with a Paired Phone to

Correct the Watch’s Time

Press (A).

Triggering Immediate Time Correction

Searching for a Paired Phone

Hold down the (A) button for about five

seconds.

Phone Finder

Watch Operation Guide 5741

Using the Crown

The watch’s crown is a screw-in (screw lock)

type. To use the crown, you first need to rotate

it towards you (leftwards) to loosen it.

Loosen

Crown

Important!

●

To prevent loss of water resistance

and/or damage due to impact, be sure

to screw the crown in by rotating it

away from you as you push it in.

Screw in

●

When pushing the crown back in, take

care not to apply too much force.

●

Fast Forward/Fast Reverse

After pulling out the crown, rotating it quickly

in succession in either direction will start a fast

forward or fast reverse operation. While

adjusting the time setting manually using

watch operations, rotating the crown quickly in

succession again while a fast forward

operation is in progress will cause the hour

and minute hands to move faster.

●

Stopping Fast Forward/Fast Reverse

Rotate the crown in the direction opposite that

of the ongoing operation or press any button.

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

If operation after pulling the crown is

disabled, the display will appear as

shown below immediately after you

pull out the crown. If that happens,

push the crown back in and lock it.

Shifting the Hands

Hand shift moves the hands out of the way for

easy viewing of display information.

1. While holding down (E), press (B).

This shifts the analog hands to allow easy

viewing of display information.

2. To return the hands to their normal

timekeeping positions, hold down (E) as

you press (B) again, or press (B) to

change to another mode.

Note

●

If you leave the watch with its hands

shifted and do not perform any

operation for about one hour, the

hands resume normal timekeeping

automatically.

Charging

This watch runs on power supplied from a

rechargeable (secondary) battery that is

charged by a solar panel. The solar panel is

integrated into the face of the watch, and

power is generated whenever the face is

exposed to light.

●

Charging the Watch

When you are not wearing the watch, put it in

a location where it is exposed to bright light.

While you are wearing the watch, make sure

that its face (solar panel) is not blocked from

light by the sleeve of your clothing. Power

generation efficiency is reduced even when

the face of the watch is blocked only partially.

NOYES

Important!

●

Some light sources and environments

can cause the watch to become

extremely hot during charging, which

creates the risk of burn injury and

damage to internal watch

components.

Avoid charging the watch under

conditions like the ones described

below, where the temperatures may

exceed 60 °C (140 °F).

ー　

On the dashboard of a vehicle

parked in the sun

ー　

Near incandescent lamps, camera

lights, halogen lamps, or other

sources of heat

ー　

In locations exposed to direct

sunlight for long periods and other

hot locations

●

The display panel may become black

(or white, depending on the LCD type)

under very high temperatures. This is

temporary, and the display will return

to normal at lower temperatures.

Watch Operation Guide 5741

●

Checking the Charge Level

When you enter the Timekeeping Mode, a

display indicator and the function hand show

the watch’s current charge level.

①

②

③

A　Good (Charge Level 1)

B　Good (Charge Level 2)

C　Low (Charge Level 3)

●

The display will show charge levels 4 and 5,

even if the watch is not in the Timekeeping

Mode.

Charge Level 1: Good

All functions enabled.

Charge Level 2: Good

All functions enabled.

Charge Level 3: Low

The functions below are disabled. Also, the

second hand jumps at two-second intervals.

●

Time signal reception

●

Compass, altitude, barometric pressure,

temperature measurements

●

Face illumination

●

Sounds (alarms, etc.)

●

Connection with a phone

One second later

Charge Level 4: Low

Battery charge is lower than Level 3, and all

functions are disabled. Also, all hands are

stopped.

Charge Level 5: Dead

All hands are stopped and digital displays are

blank. Memory data is lost, and watch settings

are returned to their initial factory defaults.

Important!

●

Should the battery go low or go dead,

expose the face (solar panel) to light as

soon as possible.

Note

●

If [RECOVER] is flashing on the

display, it means that all functions are

disabled due to momentary battery

power consumption.

[RECOVER] is flashing on the

display.

●

Exposing the watch face to light after

the battery goes dead causes the

[CHARGE] indicator to appear. This

indicates charging has started.

●

Charging Time Guidelines

The table below shows guidelines for

approximate charging times.

Charging Times Required for 1 Day of

Operation

Light Level (Lux)

Approximate

Charging Time

50,000 8 minutes

10,000 30 minutes

5,000 48 minutes

500 8 hours

Charge Recovery Times

●

Sunny day, outdoors (50,000 lux)

Dead battery

Medium

charge

2 hours

Medium charge

High

charge

20 hours

High charge

Full charge

6 hours

●

Sunny day, near a window (10,000 lux)

Dead battery

Medium

charge

6 hours

Medium charge

High

charge

73 hours

High charge

Full charge

20 hours

●

Overcast day, near a window (5,000 lux)

Dead battery

Medium

charge

9 hours

Medium charge

High

charge

119 hours

High charge

Full charge

32 hours

●

Indoor fluorescent lighting (500 lux)

Dead battery

Medium

charge

104 hours

Medium charge

High

charge

High charge

Full charge

Note

●

Actual charging time depends on the

charging environment, watch settings,

and other factors.

Watch Operation Guide 5741

●

Power Saving Function

Leaving the watch in a dark location for about

one hour between the hours of 10 p.m. and

5:50 a.m. causes the display to go blank and

then the watch enters Level 1 power saving. If

the watch is left in this condition for six or

seven days, it enters Level 2 power saving.

Power Saving Level 1 :

The second hand stops at 12 o’clock and the

digital display goes blank to save power. The

watch can connect with a phone at this level.

Power Saving Level 2 :

All hands stop and the digital display goes

blank to save power. All functions are

disabled.

Recovering from Power Saving Operation

Use one of the operations below to exit power

saving.

●

Press any button.

●

Move the watch to a bright location.

●

Trigger Full Auto Light by angling the watch

towards your face.

Note

●

The watch will not enter power saving

in the cases below.

ー　

While in the Stopwatch Mode

ー　

While in the Timer Mode

ー　

While the barometric pressure

change indicator is displayed

●

You can enable or disable Power

Saving.

Configuring Power Saving

Function Settings

●

Note that the watch also may enter

power saving if its face is blocked from

light by your sleeve while you are

wearing it.

Viewing the Face in the Dark

The face of the watch can be illuminated for

viewing in the dark.

●

To illuminate the face manually

Press (E) to turn on illumination.

●

Illumination turns off automatically if an

alarm starts to sound or if you perform a

crown operation.

●

Illumination does not turn on while a signal

receive operation or a hand movement

operation is in progress. Also, illumination

may not turn on while a sensor is taking a

reading.

●

To illuminate the face when Auto Light

is enabled

If Full Auto Light is enabled, face illumination

turns on automatically whenever the watch is

positioned at an angle of 40 degrees or more.

degrees

or more

Important!

●

Auto Light may not operate properly

when the watch is at a horizontal angle

of 15 degrees or greater from

horizontal as shown in the illustration

below.

●

Electro-static charge or magnetism

can interfere with proper Full Auto Light

operation. If this happens, try lowering

your arm and then angle it towards

your face again.

●

When moving the watch you may note

a slight rattling sound. This is the sound

of Full Auto Light switch operation and

does not indicate malfunction.

Note

●

Full Auto Light does not turn on

illumination if you are in a well-lit

location.

●

Full Auto Light is disabled when any

one of the conditions below exists.

ー　

While an alarm, timer alert, or other

beeper is sounding

ー　

While a hand movement operation is

in progress

ー　

While in the Compass Mode

ー　

While a time signal receive

operation is in progress

ー　

While Bluetooth Communication is

in progress

Watch Operation Guide 5741

●

Configuring the Full Auto Light Setting

You can enable or disable Full Auto Light as

required.

1. Enter the Timekeeping Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

The currently selected Home City will

appear on the display.

Crown

Home City

3. Press (B) three times.

[ ] appears on the display with

[ON] or [OFF] flashing.

4. Rotate the crown to enable or disable Full

Auto Light.

5. Push the crown back in and then lock it.

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

●

Specifying the Illumination Duration

You can select either 1.5 seconds or three

seconds as the illumination duration.

1. Enter the Timekeeping Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

The currently selected Home City will

appear on the display.

Crown

Home City

3. Press (B) four times.

[LIGHT] appears on the display with [1] or

[3] flashing.

4. Rotate the crown to select an illumination

duration.

[1]: 1.5-second illumination

[3]: 3-second illumination

5. Push the crown back in and then lock it.

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

Useful Features

Pairing the watch with your phone makes a

number of the watch’s features easier to use.

Auto time correction

Auto Time Correction

12:30

Selection of More Than 300 World Time

cities

Configuring World Time Settings

Watch Operation Guide 5741

Use your phone to check the distance and

bearing to a point in Location Memory

Checking the Distance and Bearing to a

Location Memory Point (Location Indicator)

Use your phone to record route waypoints

and their altitudes

Recording Waypoints and Their Altitudes

(Route Log)

In addition, a number of other watch settings

can be configured using your phone.

To transfer data to a watch and to

configure settings, you first need to pair

the watch with your phone.

Getting Ready

●

Your phone needs to have the “CASIO

WATCHES” phone app installed to pair with

the watch.

Linking with a Phone

While there is a Bluetooth connection

between the watch and phone (Mobile Link),

the watch’s current time setting is corrected

automatically. You can also change the

watch’s other settings.

Note

●

This function is available only while the

CASIO WATCHES phone app is

running on the phone.

●

This section describes watch and

phone operations.

: Watch operation

: Phone operation

Getting Ready

To use your watch in combination with a

phone, you first need to pair them. Perform the

steps below to pair the watch with a phone.

Install the app on your phone.

Configure Bluetooth settings.

Pair the watch with a phone.

●

Install the app on your phone.

In Google Play or the App Store, search for the

“CASIO WATCHES” phone app and install it

on your phone.

●

Configure Bluetooth settings.

Enable the phone’s Bluetooth.

Note

●

For details about setting procedures,

see your phone documentation.

●

Pair the watch with a phone.

1. Move the phone to be paired with close to

(within one meter of) the watch.

Tap the “CASIO WATCHES” icon.

Tap the of the “My Watch” tab.

Perform the operation shown on the

phone screen to register the watch to the

CASIO WATCHES phone app.

Hold down (B) for at least five seconds.

Release the button when the second hand

points to , and [CNCT] flashes on the

display.

When a connection is established

between the watch and phone, [CNCT]

will stop flashing.

At this time the time settings of your phone

and watch are synced with each other.

●

If pairing fails for some reason, [ERR]

appears on the display momentarily

and then the watch returns to the

Timekeeping Mode. Perform the pairing

procedure again from the beginning.

Pairing completePairing started

This completes the pairing operation.

Once paired, the smartphone and watch

automatically connect to synchronize the

watch’s time setting with that of the

smartphone.

Note

●

The first time you start up the CASIO

WATCHES phone app, a message will

appear on your phone asking if you

want to enable location information

acquisition. Configure settings to allow

background use of location

information.

Watch Operation Guide 5741

Auto Time Correction

Your watch connects with a phone at preset

times each day and correct its time settings

automatically.

●

Using This Function

Your watch corrects its time setting four times

a day according to a preset schedule. If you

leave your watch in the Timekeeping Mode, it

will perform the correction operation

automatically as you go about your daily life,

without any operation required by you.

12:30

Important!

●

The watch may not be able to perform

auto time correction under the

conditions described below.

ー　

While the watch is too far away from

its paired phone

ー　

While communication is not possible

due to radio interference, etc.

ー　

While the phone is updating its

system

ー　

While the CASIO WATCHES phone

app is not running on the phone

Note

●

If the watch does not indicate the

correct time even if is able to connect

with a phone, adjust the hand

positions.

Adjusting Hand Alignment

●

If there is a World Time City specified

with the CASIO WATCHES phone

app, its time will also be corrected

automatically.

●

The watch connects with the phone

and performs auto time correction at

around 12:30 a.m., 6:30 a.m., 12:30

p.m. and 6:30 p.m. The connection is

automatically terminated after auto

time correction is complete.

●

Time signal auto-receive will be

performed if there has been no auto

time correction based on connection

between the watch and phone for more

than one day.

●

Triggering Immediate Time Correction

The watch’s time setting is corrected

automatically whenever you establish a

connection between the watch and a phone.

Whenever you want to trigger immediate time

correction, perform the procedure below to

connect with a phone.

Enter the Receive Mode.

Navigating Between Modes

2. Move the phone close to (within one meter

of) the watch.

Press (A).

[TIME] flashes to indicate that the watch

has started the connection operation.

Once the watch and phone are

connected, [OK] will appear, and then the

watch will correct its time setting based on

information from the phone.

●

At this time your current location is

recorded by your phone.

After time correctionTrying to connect

Note

●

The connection is terminated

automatically after time correction is

complete.

●

If time correction fails for some reason,

[ERR] will appear.

●

[RCVD] flashes when the receive

operation starts, and [RCVD] stops

flashing after it is complete.

Mode Customization

You can use CASIO WATCHES to customize

modes by rearranging them on the screen,

and by deleting or adding modes.

Important!

●

You cannot perform mode

customization operations on the

watch. Use CASIO WATCHES to

configure settings.

The modes below can be rearranged or

deleted.

●

Barometer Mode

●

Thermometer Mode

●

Altitude Record Recall Mode

●

Sunrise/Sunset Mode

●

Stopwatch Mode

●

Timer Mode

●

Alarm Mode

●

World Time Mode

Tap the “CASIO WATCHES” icon.

Hold down (B) for at least five seconds.

Release the button when the second hand

points to , and [CNCT] flashes on the

display.

When a connection is established

between the watch and phone, [CNCT]

will stop flashing.

ConnectedTrying to connect

Perform the operations shown on the

phone screen to configure mode settings.

Watch Operation Guide 5741

Note

●

Increasing or decreasing the number

of modes may change mode functions

and/or settings.

●

Even if you remove the Barometer

Mode, you can still display the

barometric pressure graph on the

Timekeeping Mode screen.

●

To initialize Mode Customization

Important!

●

Initializing Mode Customization also

initializes watch settings.

Note

●

Mode Customization cannot be

initialized while Route Log is enabled.

Enter the Timekeeping Mode.

Navigating Between Modes

Loosen the crown and then pull it out.

The currently selected Home City will

appear on the display.

Crown

Home City

Hold down (A) for at least seven

seconds. Release the button when

[CLEAR] stops flashing.

This initializes Mode Customization.

Push the crown back in and then lock it.

Recording Your Current

Location (Location Memory)

You can use CASIO WATCHES to record

current location information.

Tap the “CASIO WATCHES” icon.

Enter the Compass Mode.

Navigating Between Modes

Hold down (C) for at least five seconds.

Release the button when [MEMORY]

starts to flash, and the second hand points

to .

When a location information receive

operation is successful while the watch is

connected with a phone, [MEMORY] will

change to [OK].

●

[ERR] will appear on the display if

connection fails for some reason.

●

[FAILED]

[POSITION] will appear in

sequence if location information

acquisition fails for some reason.

ConnectedTrying to connect

Perform the operation shown on the

phone screen to view the Location

Memory information record.

●

You can have only one location record

in memory. Saving location information

while there is already a location record

in memory will overwrite the existing

record with the new information.

Note

●

You can use the CASIO WATCHES

phone app to change the information

recorded in Location Memory to

something else. Note that this

operation is not supported while the

watch is being used inside of China.

●

If there is location information stored in

Location Memory, you can use

Location Indicator to check the

distance and bearing to the stored

location.

Checking the Distance and

Bearing to a Location Memory

Point (Location Indicator)

Checking the Distance and

Bearing to a Location

Memory Point (Location

Indicator)

The watch acquires current location

information from the phone, and then displays

the bearing and distance from your current

location to the location recorded in Location

Memory.

Recording Your Current Location (Location

Memory)

Bearing to memory point

Distance to memory point

Memory point

North indication

Important!

●

Note that CASIO WATCHES

operation is disabled while Location

Indicator is in use.

Tap the “CASIO WATCHES” icon.

Enter the Compass Mode.

Navigating Between Modes

Hold down (C) for at least two seconds.

Release the button when [INDICATE]

starts to flash, and the second hand points

to .

When a location information receive

operation is successful while the watch is

connected with a phone, [INDICATE] will

change to [OK].

After two seconds, the distance from your

current location to the recorded location

appears on the display, and the bearing

hand indicates the bearing to the

destination.

Watch Operation Guide 5741

North indication

Bearing to destination

North indication

Bearing to destination

Distance from your current location

Second hand

After two seconds

[ ] starts to flash on the display when the

bearing hand indication is within 30

degrees of the bearing to the destination.

[G] is shown on the display when you are

within 80 meters of the destination. [G] will

disappear from the display if you move to

a distance of 161 meters or more from the

destination.

Check the display distance and the

bearing to your destination on the display.

Note

●

Location Indicator remains enabled for

three minutes.

●

The watch connects with the phone

and acquires location information

every 10 seconds or each time (C) is

pressed, and uses the acquired

information to refresh the distance and

the bearing up to the point stored in

Location Memory.

●

Location Indicator will become

disabled automatically about three

minutes after it is enabled. You can

also disable it manually by pressing

any button besides (C) or (E).

●

Pressing (C) or (E) while Location

Indicator is enabled causes it to remain

enabled for three minutes after the

button is pressed.

●

Pressing (C) to update data causes [

TRY] to appear on the display and

remain displayed until data updating is

complete.

●

[

FAIL] will appear on the display in

the cases below.

ー　

When it has been 30 seconds or

more since the last update and

location information acquisition fails

ー　

When it has been 60 seconds or

more since the last update

ー　

When data update fails after you

press (C)

●

The display range for the distance to a

destination is 0 to 99,999 meters (0 to

327,995 feet). [

-----] will be shown

for the distance to the destination when

it is outside the display range.

●

[ERR] will appear on the display if

connection fails for some reason.

●

The message [NO-DATA] will appear

when there is no data in Location

Memory.

●

[FAILED]

[POSITION] will appear in

sequence if the first location

information acquisition fails.

●

[

] or [G] will flash on the display if the

watch detects abnormal magnetism

while Location Indicator is in use.

●

[ ERR] will appear on the display if a

direction sensor error occurs while

Location Indicator is in use.

Auto Altitude Calibration

Enabling auto altitude calibration with CASIO

WATCHES will cause altitude values to be

acquired by CASIO WATCHES, which will be

used to automatically correct the watch’s

altitude reading.

Important!

●

Use CASIO WATCHES to enable or

disable auto altitude calibration. It

cannot be enabled or disabled on the

watch.

Note

●

If an altitude value acquired by CASIO

WATCHES satisfies accuracy

conditions, the watch will automatically

correct is altitude reading.

●

Auto altitude calibration is performed

at the same time as auto time

correction.

●

Auto altitude calibration is not

performed for 12 hours after the time

setting is adjusted manually.

Watch Operation Guide 5741

Recording Waypoints and

Their Altitudes (Route Log)

Route Log uses CASIO WATCHES GPS to

record the waypoints of your routes. At the

same time, the watch takes altitude readings

every two minutes and stores them in memory,

and automatically transfers altitude data to

CASIO WATCHES every hour.

Tap the “CASIO WATCHES” icon.

Enter the Altimeter Mode.

Navigating Between Modes

Hold down (A) for at least five seconds.

Release the button after [LOG] starts to

flash, and the second hand moves to .

When a connection between the watch

and phone is established, [LOG] will

change to [LOG ON].

●

This indicates that Route Log is

enabled.

ConnectedTrying to connect

●

To disable Route Log, hold down (A)

again for at least five seconds.

Note

●

[LOG] is displayed while Route Log is

enabled.

●

Route Log becomes disabled

automatically 12 hours after it is

enabled.

●

Route Log remains enabled even if you

change to another mode.

●

The watch has enough memory to hold

up to 60 altitude records. Recording

data when there are already 60

records in memory will automatically

delete the oldest record to make room

for the new one.

●

Data Transfer

After Route Log is enabled, data transfer

starts when the number of altitude records in

watch memory reaches 30.

●

Auto data transfer is performed during the

normal state of each mode.

The display cycles as shown below as data is

being transferred.

●

The second hand will point to [RC].

●

If data transfer fails for some reason, the

watch will return to the previous screen with

[LOG] flashing.

Note

●

If auto transfer fails for some reason,

the watch will keep trying up to five

times at 10-minute intervals. Or data is

transferred when a CASIO WATCHES

connection is established.

Configuring World Time

Settings

Specifying a World Time City with the CASIO

WATCHES phone app causes the watch’s

World Time City to change accordingly.

Settings can be configured to perform auto

summer time switching for the World Time

City.

Note

●

The CASIO WATCHES phone app

World Time lets you select from among

approximately 300 cities as the World

Time City.

●

You can use the CASIO WATCHES

phone app to configure settings for

user cities that are not included in the

watch’s built-in World Time Cities. You

must use the CASIO WATCHES

phone app to select a user city as your

World Time City.

●

To select a World Time City

Tap the “CASIO WATCHES” icon.

Hold down (B) for at least five seconds.

Release the button when the second hand

points to , and [CNCT] flashes on the

display.

When a connection is established

between the watch and phone, [CNCT]

will stop flashing.

●

If connection fails for some reason,

[ERR] will appear on the display

momentarily and then the watch will

return to the Timekeeping Mode.

ConnectedTrying to connect

Perform the operation shown on the

phone screen. The World Time setting will

be reflected on the watch.

Watch Operation Guide 5741

●

Configuring the Summer Time Setting

Tap the “CASIO WATCHES” icon.

Hold down (B) for at least five seconds.

Release the button when the second hand

points to , and [CNCT] flashes on the

display.

When a connection is established

between the watch and phone, [CNCT]

will stop flashing.

●

If connection fails for some reason,

[ERR] will appear on the display

momentarily and then the watch will

return to the Timekeeping Mode.

ConnectedTrying to connect

Perform the operation shown on the

phone screen to select a summer time

setting.

●

“Auto”

The watch switches between standard

time and summer time automatically.

●

“OFF”

The watch always indicates standard

time.

●

“ON”

The watch always indicates summer

time.

Note

●

While the summer time setting is

“Auto”, the watch switches between

standard time and summer time

automatically. You do not need to

switch between standard time and

summer time manually. Even if you are

in an area that does not observe

summer time, you can leave the

watch’s summer time setting as “Auto”.

●

Changing the time setting manually

with a watch operation will cancel auto

standard time/summer time switching.

●

For information about summer time

periods, refer to the “Summer Time

Table”.

●

Swapping Your World Time and Home

Time

Tap the “CASIO WATCHES” icon.

Hold down (B) for at least five seconds.

Release the button when the second hand

points to , and [CNCT] flashes on the

display.

When a connection is established

between the watch and phone, [CNCT]

will stop flashing.

●

If connection fails for some reason,

[ERR] will appear on the display

momentarily and then the watch will

return to the Timekeeping Mode.

ConnectedTrying to connect

Perform the operation shown on the

phone screen to swap your Home Time

with your World Time.

Note

●

Auto time correction does not work for

24 hours after swapping the Home

Time and World Time.

Adjusting Hand Alignment

If the hands are out of alignment even though

auto time correction is being performed, you

can use the CASIO WATCHES phone app to

adjust them.

Tap the “CASIO WATCHES” icon.

Hold down (B) for at least five seconds.

Release the button when the second hand

points to , and [CNCT] flashes on the

display.

When a connection is established

between the watch and phone, [CNCT]

will stop flashing.

●

If connection fails for some reason,

[ERR] will appear on the display

momentarily and then the watch will

return to the mode it was in before you

started the connection procedure.

ConnectedTrying to connect

Perform the operation shown on the

phone screen to correct hand alignment.

Watch Operation Guide 5741

Phone Finder

You can use phone finder to trigger a tone on

the phone to make it easy to find. The tone is

forced to sound even if the phone is in vibrate

mode.

Important!

●

Do not use this function in areas where

phone call tones are restricted.

●

The tone sounds at a high volume. Do

not use this function when listening to

phone output over earphones.

If the watch is connected with a phone,

press any button to terminate the

connection.

DisconnectedConnected

Enter the Receive Mode.

Navigating Between Modes

Hold down (A) for at least five seconds.

Release the button when [FIND] starts to

flash.

The phone sounds a tone when it

establishes a connection with the watch.

●

It takes a few seconds before the phone

tone sounds.

Sounding phone alert

sound

Getting ready to

connect with phone

Press any button to stop the tone.

●

You can press any watch button to stop

the phone tone only during the first 30

seconds after it starts to sound.

Configuring Watch Settings

Alarm time, timer start time, and other settings

can also be configured using the CASIO

WATCHES phone app.

Tap the “CASIO WATCHES” icon.

Hold down (B) for at least five seconds.

Release the button when the second hand

points to , and [CNCT] flashes on the

display.

When a connection is established

between the watch and phone, [CNCT]

will stop flashing.

●

If connection fails for some reason,

[ERR] will appear on the display

momentarily and then the watch will

return to the Timekeeping Mode.

ConnectedTrying to connect

Select the setting you want to change

and then perform the operation shown on

the phone screen.

Changing the Home City

Summer Time Setting

Tap the “CASIO WATCHES” icon.

Hold down (B) for at least five seconds.

Release the button when the second hand

points to , and [CNCT] flashes on the

display.

When a connection is established

between the watch and phone, [CNCT]

will stop flashing.

●

If connection fails for some reason,

[ERR] will appear on the display

momentarily and then the watch will

return to the Timekeeping Mode.

ConnectedTrying to connect

Perform the operation shown on the

phone screen to change your Home City

summer time setting.

Watch Operation Guide 5741

Checking the Watch Charge

Level

Use the procedure below to check the current

charge level with CASIO WATCHES.

Tap the “CASIO WATCHES” icon.

Hold down (B) for at least five seconds.

Release the button when the second hand

points to , and [CNCT] flashes on the

display.

When a connection is established

between the watch and phone, [CNCT]

will stop flashing.

●

If connection fails for some reason,

[ERR] will appear on the display

momentarily and then the watch will

return to the Timekeeping Mode.

ConnectedTrying to connect

Use CASIO WATCHES to check the

charge level.

Recording Your Current

Location (TIME&PLACE)

While traveling or otherwise on the go, you can

use the procedure below to record your

current location, along with the time and date,

on your phone. Recorded location information

can be viewed on the CASIO WATCHES

phone app map.

●

Recording Your Current Location

Enter the Receive Mode.

Navigating Between Modes

When you are in the location you want

to record, press (A).

This records, in phone memory, your

latitude and longitude and the current date

and time, and displays [OK] on the watch.

●

At this time the time settings of your

phone and watch are synced with each

other.

●

Viewing a Recorded Location on a Map

Tap the “CASIO WATCHES” icon.

Perform the operation shown on the

phone screen to view recorded location

information.

Note

●

You can use the CASIO WATCHES

phone app to delete recorded location

information.

Connection

Connecting with a Phone

Your watch can connect with a phone that is

paired with it.

●

If the watch is not paired with the phone you

want to connect with, refer to the information

below and pair them.

Pair the watch with a phone.

●

Connecting with a Phone

1. Move the phone close to (within one meter

of) the watch.

Hold down (B) for at least five seconds.

Release the button when the second hand

points to , and [CNCT] flashes on the

display.

When a connection is established

between the watch and phone, [CNCT]

will stop flashing.

●

If connection fails for some reason,

[ERR] will appear on the display

momentarily and then the watch will

return to the Timekeeping Mode.

ConnectedTrying to connect

Watch Operation Guide 5741

Important!

●

If you have problems establishing a

connection, it could mean that the

CASIO WATCHES phone app is not

running on your phone. On your

phone’s home screen, tap the “CASIO

WATCHES” icon. After the app starts

up, hold down the watch’s (B) button

for at least five seconds.

Note

●

The connection is terminated if you do

not perform any operation on the watch

or phone for a fixed amount of time.

To specify the connection limit time,

perform the following operation with

the CASIO WATCHES phone app:

“Watch settings”

“Connection time

with the app”. Next, select a setting of

3 minutes, 5 minutes, or 10 minutes.

Disconnecting the Watch from a

Phone

Pressing any button terminates a Bluetooth

connection and return to the Timekeeping

Mode.

DisconnectedConnected

Unpairing the Watch from a Phone

Unpairing the watch from a phone requires

both the CASIO WATCHES phone app and

watch operations.

●

Deleting Pairing Information from the

CASIO WATCHES phone app

Tap the “CASIO WATCHES” icon.

Perform the operation shown on the

phone screen to unpair.

●

Deleting Pairing Information from the

Watch

Hold down (B) for at least two seconds

to enter the Timekeeping Mode.

Loosen the crown and then pull it out.

The currently selected Home City will

appear on the display.

Crown

Home City

Hold down (D) for at least three

seconds. This, at first, causes [PAIR] and

[CLEAR] to alternate on the display.

Release the button when only [CLEAR] is

displayed.

This deletes the pairing information from

the watch and returns to the timekeeping

display.

Push the crown back in and then lock it.

This returns the watch to the Timekeeping

Mode.

Important!

●

Pairing information cannot be deleted

from watch memory while Route Log is

enabled.

Recording Waypoints and Their

Altitudes (Route Log)

If you purchase another phone

You need to perform the pairing operation

whenever you want to establish a Bluetooth

connection with a phone for the first time.

Deleting Pairing Information from the

Watch

Pair the watch with a phone.

Time Correction

Your watch can obtain date and time

information by connecting with a phone and by

receiving time signals, which it uses to adjust

its settings.

Important!

●

When you are on an aircraft or in any

other location where radio signals may

cause problems, enable the watch’s

Airplane Mode to disable connection

with your phone.

Using the Watch in a Medical

Facility or Aircraft

Watch Operation Guide 5741

Referring to the information below, configure

the time setting in accordance with the method

that suits your own lifestyle.

Do you use a phone?

Time correction by connecting with your

phone is recommended.

Auto Time Correction

12:30

Can you receive a time signal in your area?

While the watch’s Home Time City setting

is one where a time signal can be

received, the watch’s time and day

settings can be adjusted in accordance

with the signal.

Time Signal Reception Ranges

Setting a Home City

Other than the above.

If you are unable to connect with a phone

and are unable to receive a time signal,

you can perform watch button operations

to adjust its time setting.

Using Watch Operations to Adjust the

Time Setting

Time Adjustment Using a

Time Signal

Overview

The watch’s time and day settings can be

configured in accordance with a received time

calibration signal.

Important!

●

In order to make it possible for the

current time setting to be adjusted

correctly based on time calibration

signal reception, you need to specify

the time zone where you are using the

watch.

●

If the watch was unable to connect with

a phone even once for time correction

during the previous day while

connection with a phone is being used,

it will automatically try to receive a time

calibration signal.

Note

●

Areas where time calibration signal

reception is supported are limited.

When the watch is in an area where

time calibration signal reception is not

possible, connect with a phone to

adjust time and day settings.

Time Signal Reception Ranges

Appropriate Signal Reception

Location

A time calibration signal can be received while

the watch is near a window.

●

Position the watch so its 12 o’clock side is

facing the window.

●

Keep metal objects away from the watch.

●

Do not move the watch.

●

Do not perform any operation on the watch.

12 o'clock

Note

●

You may experience time calibration

signal reception problems in the areas

described below.

ー　

Among or near buildings

ー　

While riding in a vehicle

ー　

Near household appliances, office

machines, mobile phones, etc.

ー　

On a construction site, in an airport,

or any other location where radio

wave interference occurs

ー　

Near high-voltage lines

ー　

In mountainous areas or behind a

mountain

Watch Operation Guide 5741

Time Signal Reception Ranges

●

Japan (JJY)

The Japan time signal radio stations are

located on Mt. Otakadoya in Fukushima and

Mt. Hagane in Fukuoka/Saga.

The reception range of the Japanese time

signals is approximately 1,000 km from each

transmission station.

●

China (BPC)

The China time signal radio station is located

in Shangqiu, Henan Province, China.

The reception range of the Chinese time

signal is approximately 1,500 km from the

transmission station.

●

United States (WWVB)

The United States time signal radio station is

located in Fort Collins, Colorado.

The reception range of the U.S. time signal is

approximately 3,000 km from the transmission

station.

●

U.K. (MSF)/Germany (DCF77)

The U.K. time signal radio station is located in

Anthorn, Cumbria.

The German time signal radio station is

located in Mainflingen, southeast of Frankfurt.

The reception range of the U.K. and German

time signals is approximately 1,500 km from

each transmission station.

Note

●

Even if you are within the normal

reception range of a time calibration

signal, reception may be made

impossible by the following factors:

geographic contours, weather, the

season, the time of day, wireless

noise.

●

A time calibration signal cannot be

received while the city selected as your

Home City is one that does not support

signal reception.

Auto Time Calibration Signal

Receive

An automatic time calibration signal receive

operation is performed and the time and day

settings are corrected between midnight and

5:00 a.m. Once a signal receive operation is

successful, no more auto receive operations

are performed that day.

1. Place the watch near a window or some

other location appropriate for signal

reception.

●

[RC !] is shown on the display while time

signal reception is in progress.

●

When a receive operation is successful,

the watch adjusts its current time and

day settings automatically, and then

returns to the Timekeeping Mode.

Note

●

Reception takes anywhere from about

two minutes to about 10 minutes. It can

take as long as 20 minutes.

Enabling and disabling Auto

Receive

You can stop auto receive by disabling the

Auto Receive setting.

Note

●

While the Home City setting is one

where time signal reception is

possible, you can enable or disable

auto receive as required.

Time Signal Reception Ranges

1. Enter the Receive Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

[AUTORC] appears on the display with

[ON] or [OFF] flashing.

Crown

3. Rotate the crown to enable or disable Auto

Receive.

4. Push the crown back in and then lock it.

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

Watch Operation Guide 5741

Manual Time Calibration Signal

Receive

1. Place the watch near a window or some

other location appropriate for time signal

reception.

2. Enter the Receive Mode.

Navigating Between Modes

3. Hold down (A) for at least two seconds

until [RC !] appears on the display.

This indicates that the receive operation

has started. After the receive operation is

complete, the watch’s time and day

settings will be corrected accordingly.

Receive level indicator

●

The level indicator shows the signal

level ([L1], [L2], [L3]) while a receive

operation is in progress.

Receive Level Indicator

Note

●

The receive operation takes anywhere

from about two minutes to about 10

minutes. It can take as long as 20

minutes.

●

Time calibration signal reception is

better at night than during the day.

Receive Level Indicator

While a receive operation is in progress, its

current status is indicated on the display as

shown below. Use the level indicator to find a

location where signal reception is stable.

Receive level indicator

Stable

Unstable

Note

●

It takes about 10 seconds for time

signal reception conditions to stabilize.

●

Reception conditions are affected by

weather, the time of day, the

surrounding environment, etc.

Checking the Last Time Adjustment

Result

1. Enter the Receive Mode.

Navigating Between Modes

This displays the date and time of the last

successful receive operation.

Last receive time

Last receive date

Signal Reception Precautions

●

When the watch is unable to correct its time

in accordance with a calibration signal for

some reason, average timekeeping

accuracy is within ±15 seconds per month.

●

Note that an internal decoding process the

watch performs after it receives a signal

may cause the time setting to be slightly off

(by less than one second).

●

Time calibration signal reception is not

possible under the conditions described

below.

ー　

While battery power is low

ー　

While in any mode besides the

Timekeeping Mode

ー　

When the watch is at Level 2 power

saving

ー　

While a compass reading, barometric

pressure measurement, temperature

measurement, or altitude measurement

operation is in progress

ー　

While the barometric pressure change

indication is enabled

ー　

While a timer countdown operation is in

progress

ー　

While auto time correction is disabled

ー　

While the Home City area setting is one

where time signal reception is not

possible

ー　

While the watch is outside the time signal

reception range

●

When the receive operation is successful,

the time and/or day settings will be

corrected automatically. Summer time will

not be applied correctly in the case

described below.

ー　

When the summer time start date and

time, end date and time, or other rules are

changed by authorities

Watch Operation Guide 5741

Using Watch Operations to

Adjust the Time Setting

If your watch cannot connect with a phone for

some reason, you can use watch operations

to adjust date and time settings.

●

Setting a Home City

Use the procedure in this section to select a

city to use as your Home City. If you are in an

area that observes summer time, you can also

enable or disable summer time.

1. Enter the Timekeeping Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

The currently selected Home City will

appear on the display.

Crown

Home City

3. Rotate the crown to display the city you

want to use.

●

For information about city codes, refer

to the information below.

City Table

4. Press (B).

5. Rotate the crown to select a summer time

setting.

Rotating the crown cycles through the

setting items shown below.

●

[AUTO]

The watch switches between standard

time and summer time automatically.

●

[OFF]

The watch always indicates standard

time.

●

[ON]

The watch always indicates summer

time.

6. Push the crown back in and then lock it.

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

●

The [AUTO] summer time setting is

valid when the watch’s Home City is in

an area where a time signal can be

received.

●

Setting the Time/Date

1. Enter the Timekeeping Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

The currently selected Home City will

appear on the display.

Crown

Home City

3. Press (D).

This causes the hours and minutes digits

to flash.

4. Rotate the crown to change the minute

setting.

●

The hour digit changes in sync with the

minute digit change.

5. Press (B).

This causes the hours digits to flash.

6. Rotate the crown to change the hour

setting.

7. Press (B).

This causes the current year setting to

flash on the display.

Watch Operation Guide 5741

8. Rotate the crown to change the year

setting.

Crown

Ye a r

9. Press (B).

This causes the month to flash on the

display.

10. Rotate the crown to change the month.

Crown

Month

11. Press (B).

This causes the day to flash on the

display.

12. Rotate the crown to change the day.

Crown

Day

13. On a time signal at the top of a minute,

push the crown back in and lock it.

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

●

Switching between 12-hour and 24-

hour Timekeeping

You can specify either 12-hour format or 24-

hour format for the time display.

1. Enter the Timekeeping Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

The currently selected Home City will

appear on the display.

Crown

Home City

3. Press (B) five times.

This causes [12H] or [24H] to flash on the

display.

4. Rotate the crown to select [12H] (12-hour

timekeeping) or [24H] (24-hour

timekeeping).

Crown

5. Push the crown back in and then lock it.

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

Using the Watch in a Medical

Facility or Aircraft

Whenever you are in a hospital, on an aircraft,

or in any other location where auto time

calibration signal receive or connection with a

phone may cause problems, you can perform

the procedure below to disable auto time

correction. To re-enable auto time correction,

perform the same operation again.

1. Enter the Receive Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

[AUTORC] appears on the display with

[ON] or [OFF] flashing.

Crown

3. Rotate the crown to change the auto time

correction setting.

[OFF]: Auto time correction disabled.

[ON]: Auto time correction enabled.

4. Push the crown back in and then lock it.

Watch Operation Guide 5741

World Time

You can view the current time in 55 cities (38

time zones), and UTC (Coordinated Universal

Time) time.

Using the CASIO WATCHES

Phone App to Configure

World Time City Settings

If the watch is paired with a phone, you can

also use the CASIO WATCHES phone app to

set the World Time city.

Configuring World Time Settings

Note

●

World Time cities that can be selected

only by using the CASIO WATCHES

phone app cannot be selected using

watch operations.

Checking World Time

1. Enter the World Time Mode.

Navigating Between Modes

After the currently selected World Time

City name appears, the watch will display

the current time in that city.

●

The hour and minute hands will indicate

the current Home City time.

World Time City

World Time

Setting the World Time City

Use the procedure in this section to select a

World Time city. If you are in an area that

observes summer time, you can also enable

or disable summer time.

1. Enter the World Time Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

This displays the currently selected World

Time City.

Crown

World Time City

3. Rotate the crown to display the city you

want to use.

●

For information about city codes, refer

to the information below.

City Table

4. Press (B).

5. Rotate the crown to select a summer time

setting.

Rotating the crown cycles through the

setting items shown below.

●

[AUTO]

The watch switches between standard

time and summer time automatically.

●

[OFF]

The watch always indicates standard

time.

●

[ON]

The watch always indicates summer

time.

6. Push the crown back in and then lock it.

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

●

While [UTC] is selected as the city, you

will not be able to change or check the

summer time setting.

●

Specifying UTC (Coordinated Universal

Time) as Your World Time City

To set UTC (Coordinated Universal Time) as

your World Time City, enter the World Time

Mode and then hold down (A) for at least three

seconds.

Swapping Your Home Time

and World Time

In the World Time mode, hold down (D) for at

least three seconds. [ ] will appear

on the display, and your Home City time will

be swapped with your World Time.

After swappingBefore swapping

World Time

Home City Time

World TimeHome City Time

Watch Operation Guide 5741

Moving Between Time Zones

Use the procedure below to easily change day

and time settings of the watch to a destination

location.

●

Before Boarding

1. Configure the World Time to the current

time at your destination.

Destination time

Current time

Using CASIO WATCHES to Configure

Settings

Using Watch Operations to Configure

Settings

2. Disable auto time correction.

Using the Watch in a Medical Facility or

Aircraft

●

After Arriving

1. Swap the origin time zone time with the

destination time zone time.

Destination timeDestination time

After swappingBefore swapping

Using CASIO WATCHES to Configure

Settings

Using Watch Operations to Configure

Settings

2. Disable auto time correction.

Using the Watch in a Medical Facility or

Aircraft

3. Correct the time setting.

Triggering Immediate Time Correction

Alarm

The watch beeps when an alarm time is

reached. You can set up to five different

alarms. The hourly time signal causes the

watch to beep every hour on the hour.

●

The beeper will not sound if battery power

is low.

Using the CASIO WATCHES

Phone App to Configure

Alarm Settings

If the watch is paired with a phone, you can

also use the CASIO WATCHES phone app to

set alarms.

Configuring Watch Settings

Configuring Alarm Settings

1. Enter the Alarm Mode.

Navigating Between Modes

2. Use (A) and (C) to select the alarm number

([AL1] to [AL5]) whose setting you want to

change.

Alarm number

Alarm time

Watch Operation Guide 5741

3. Loosen the crown and then pull it out.

This causes the hours and minutes digits

to flash.

Crown

Hours

Minutes

4. Rotate the crown to change the minute

setting.

●

The hour digit changes in sync with the

minute digit change.

5. Press (B).

This causes the hours digits to flash.

Hours

6. Rotate the crown to change the hour

setting.

●

If you are using 12-hour timekeeping,

the time setting is indicated as [A] (a.m.)

or [P] (p.m.).

7. Push the crown back in and then lock it.

Note

●

If you do not perform any operation for

about three minutes while in the Alarm

mode, the watch automatically returns

to the Timekeeping Mode.

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

●

To stop the alarm

To stop the alarm after it starts to sound when

an alarm time is reached, press any button.

Note

●

A beeper sounds for 20 seconds when

an alarm time is reached.

Enabling the Hourly Time

Signal

1. Enter the Alarm Mode.

Navigating Between Modes

2. Press (A) or (C) to display the hourly time

signal screen ([SIG]).

3. Press (D) to toggle the hourly time signal

between enabled and disabled.

●

(hourly time signal) is shown on the

display while the hourly time signal is

enabled.

Turning Off an Alarm or the

Hourly Time Signal

To stop an alarm or the hourly time signal from

sounding, perform the steps below to turn it

off.

●

To have an alarm or hourly time signal

sound again, turn it back on.

Note

●

Indicators are displayed while any of

the alarms or the hourly time signal is

turned on.

●

The applicable indicators are not

displayed while all of the alarms are

turned off and/or the hourly time signal

is turned off.

Alarm

Hourly time signal

1. Enter the Alarm Mode.

Navigating Between Modes

2. Use (A) and (C) to scroll through the alarm

number ([AL1] to [AL5]) and hourly time

signal ([SIG]) screens until the one you

want to turn off is displayed.

Alarm number or hourly time signal

Watch Operation Guide 5741

3. Press (D) to turn off the displayed alarm or

the hourly time signal.

●

Each press of (D) toggles between on

and off.

●

Turning off all alarms will cause

(alarm) to disappear from the display,

while disabling the hourly time signal

causes (hourly time signal) to

disappear from the display.

Note

●

If (alarm) is still displayed, it

means that another alarm is still turned

on. To turn off all of the alarms, repeat

steps 2 and 3 until the

(alarm)

indicator is no longer displayed.

Digital Compass

You can use the Compass Mode to determine

the direction of north, and to check your

bearing to a destination.

Important!

●

Check the information at the link below

to find out how to ensure correct

readings.

Calibrating Compass Readings

Digital Compass Reading

Precautions

Taking a Compass Reading

1. Enter the Compass Mode.

Navigating Between Modes

This displays [COMP] and starts digital

compass readings.

2. Keeping the watch level, point 12 o’clock

in the direction of your desired objective.

●

The second hand points North. The

digital display shows one of 16 literal

direction indications or the bearing

angle.

●

To retrigger the compass operation,

press (C).

Interpreting Bearing Readings

315°

0°

Bearing angle

Bearing angle to objective

Bearing to objective

North

Objective

Directions: N (North), E (East), W (West), S

(South)

Note

●

Normally the compass indicates

magnetic north. You can also

configure settings to indicate true

north.

Setting Up for True North

Readings (Magnetic Declination

Calibration)

Magnetic North and True North

●

After the initial reading is displayed, the

watch will continue to take readings

about every second for about the next

60 seconds. The watch will return to

the Timekeeping Mode automatically

about 60 seconds after you press (C).

●

Full Auto Light will not illuminate the

face while a compass operation is in

progress.

●

If an alarm or other beeper sounds, or

if you turn on illumination by pressing

(E) while a compass operation is in

progress, the compass operation will

be suspended momentarily. The

compass operation will resume when

the beeper stops, or illumination turns

off.

●

You can use CASIO WATCHES to

record location information and then

use the watch to display the distance

and bearing to the recorded location.

Recording Your Current Location

(Location Memory)

Checking the Distance and

Bearing to a Location Memory

Point (Location Indicator)

Watch Operation Guide 5741

●

Aligning a Map with Actual

Surroundings (Setting a Map)

Setting a map means to align the map so the

directions indicated on it are aligned with the

actual directions of your location. Once you

set a map, you can more easily get a grasp of

the relationship between map markings and

actual geographic contours. To set a map with

this watch, align north on the map with the

north indication of the watch. Once you set the

map, you can compare your bearing on the

map with your surroundings, which will help

you determine your current location and

destination.

●

Note that map reading skills and experience

are required to determine your current

location and destination on a map.

Saving a Bearing to a

Destination (Bearing

Memory)

You can record the bearing to a destination.

The recorded bearing is indicated by the

bearing hand. This makes it possible for you

to progress towards a target destination even

when visibility is poor.

1. Enter the Compass Mode.

Navigating Between Modes

2. Keeping the watch horizontal, point 12

o’clock in the direction of the objective

your want to record.

3. Press (D).

The direction of the 12 o’clock position of

the watch is recorded as the destination

direction.

Objective

Recorded bearing angle

North North

Recorded bearing angle

Records a

destination

bearing

●

To clear a recorded bearing, hold down

(D) for at least two seconds.

Calibrating Compass

Readings

Calibrating Compass Readings

Perform figure 8 or three-point calibration

whenever you notice the watch’s compass

readings differ from those of another compass

or before setting out on a climb or trek.

●

Note that accurate compass readings

and/or calibration will not be possible in an

area where strong magnetism is present.

Digital Compass Reading Precautions

Figure 8 calibration

1. Enter the Compass Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

This displays .

Crown

3. Press (C).

Move your arm in a figure 8 pattern as

shown in the illustrations below.

●

Allow your wrist to twist.

●

Keep your arm as far as possible from

your body as you move it.

●

The symbol will stop flashing on

the display while calibration is in

progress.

●

When the calibration operation is

successful, [OK] will appear on the

display.

Note

●

If calibration fails, the watch returns to

its state in step 2 of this procedure.

Perform the steps again starting from

step 3.

4. Push the crown back in and then lock it.

3-Point Calibration

1. Enter the Compass Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

This displays .

3. Press (B).

This displays [

1].

Crown

4. While keeping the watch horizontal, press

(C).

This starts calibration of the first point,

which causes [

WAIT] to appear on the

display. When calibration is successful,

indicators appear on the display in the

following sequence: [OK]

[Turn 180°]

[

2].

5. Rotate the watch 180 degrees, taking care

to be as exact as possible.

Watch Operation Guide 5741

6. Press (C).

This starts calibration of the second point,

which causes [

WAIT] to appear on the

display. When the calibration operation is

completed successfully, [OK] will appear,

and then [TURN] and [OVER] will

alternate on the display.

7. Turn the watch over so the LCD is pointing

at the ground.

Ground

8. While keeping the watch horizontal, press

(C).

This starts calibration of the third point,

which causes [WAIT] to appear on the

display. When the calibration operation is

successful, [OK] will appear on the

display.

9. Push the crown back in and then lock it.

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

●

If calibration fails, the watch returns to

its state in step 2 of this procedure. If

this happens, restart the above

procedure from step 3.

Setting Up for True North Readings

(Magnetic Declination Calibration)

If you want the watch to indicate true north

instead of magnetic north, you need to specify

your current location’s magnetic declination

direction (east or west) and declination angle.

Magnetic North and True North

●

The magnetic declination angle value can

be set in 1° (degree) units only. Use a value

that is closest to the angle you want to set.

Example: For an angle of 7.4°, set 7°.

Example: For an angle of 7°40’ (7 degrees,

40 minutes), set 8°.

Note

●

Magnetic declination angles (east or

west) and angle degree values for

specific locations can be found on

geographic maps, mountain climbing

maps, and other maps that include

contour lines.

1. Enter the Compass Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

This displays .

3. Press (B).

This displays [

1].

Crown

4. Press (B).

This displays [DEC] and the current

magnetic declination setting.

5. Rotate the crown to select a magnetic

declination direction and angle settings as

desired.

Setting range: 90° west to 90° east

[OFF]: Magnetic north

[E]: East declination (Magnetic north is

east of true north.)

[W]: West declination (Magnetic north is

west of true north.)

●

To return the setting to [OFF], press (A)

and (C) at the same time.

＋

−

Magnetic declination angle

Magnetic declination direction

6. Push the crown back in and then lock it.

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

●

Magnetic North and True North

There are actually two types of north:

magnetic north and true north.

Magnetic north: North indicated by the needle

of a compass

True north: Direction to the North Pole

As shown in the illustration below, magnetic

north and true north are not the same.

Earth

Magnetic north

True north

Note

●

The north indicated on commercially

available maps is normally true north.

Watch Operation Guide 5741

Digital Compass Reading

Precautions

Location During Use

Taking readings near sources of strong

magnetism can cause reading error. Keep the

watch away from the following types of items.

Permanent magnets (magnetic accessories,

etc.), metal objects, high-voltage wires, aerial

wires, electrical household appliances (TVs,

computers, cellphones, etc.)

●

Note that correct direction readings are not

possible indoors, especially inside of

reinforced concrete structures.

●

Accurate direction readings are not

possible on electric trains, on boats, on

aircraft, etc.

Storage Location

Exposure of the watch to magnetism can

affect the accuracy of digital compass

readings. Keep the watch away from the types

of items below.

Permanent magnets (magnetic accessories,

etc.), metal objects, electrical household

appliances (TVs, computers, cellphones, etc.)

Altitude

Measurement

The watch takes altitude readings and

displays results based on air pressure

measurements taken by a built-in pressure

sensor.

Important!

●

The altitude readings displayed by the

watch are relative values that are

calculated based on barometric

pressure measured by the watch’s

pressure sensor. This means that

barometric pressure changes due to

weather can cause altitude readings

taken at the same location to be

different. Also note that the value

displayed by the watch may be

different from the actual elevation and/

or sea level elevation indicated for the

area where you are located. When

using the watch’s altimeter while

mountain climbing, it is recommended

that you regularly calibrate its readings

in accordance with local altitude

(elevation) indications.

Calibrating Altitude Readings

(Offset)

●

The altitude correction value you

specify and/or barometric pressure

changes may cause a negative value

to be displayed.

●

Check the information at the link below

to find out about how to minimize

differences between readings

produced by the watch, and values

provided by local altitude (elevation)

indications.

Calibrating Altitude Readings

(Offset)

Altitude Reading Precautions

Checking the Current

Altitude

1. Enter the Altimeter Mode.

Navigating Between Modes

Entering the Altimeter Mode will start

altitude measurement and display the

altitude at your current location.

Altitude graph

Altitude

●

The watch takes altitude readings every

second for about the first three minutes.

After that, it takes readings according to

the watch’s auto measurement interval

setting.

●

Check the information at the link below

to find out how to configure the auto

measurement interval.

Setting the Auto Measurement

Interval

●

To retrigger measurement, press (A).

●

To return to the Timekeeping Mode,

press (B).

Note

●

If the hour and/or minute hand is

located over the digital display when

you perform an altitude measurement,

the hands will temporarily shift to the

22-second or 38-second position to

allow easier reading of measurement

values. The hands will unshift to their

normal positions after about three

seconds.

●

When you enter the Altimeter Mode,

the function hand indicates the altitude

difference if the previous altitude

measurement was retained.

Checking the Altitude Differential

from a Reference Point

●

Measurement range: -700 to 10,000

meters (-2,300 to 32,800 feet)

(Measurement unit: 1 meter (5 feet))

Note that calibrating altitude readings

will cause a change in the

measurement range.

●

[- - -] will appear for the measured value

if it is outside the allowable range.

Watch Operation Guide 5741

Interpreting Altitude Graph Contents

50m*

6 readings ago

Current reading

1 square (

) is 10 m.

Calibrating Altitude

Readings (Offset)

To minimize the difference between locally

indicated and measured values, you should

update the reference altitude value (offset)

before setting off and during treks or any other

activities where you take altitude readings.

Also, you can ensure accurate measurements

by checking a map local altitude indications or

some other source for your current location’s

altitude, and regularly calibrating watch

readings with the latest information while

mountain climbing.

Note

●

You can find out the altitude at your

current location from signs, maps, on

the Internet, etc.

●

Differences between actual altitude

and watch readings can be caused by

the factors below.

ー　

Changes in barometric pressure

ー　

Changes in temperature caused by

variations in barometric pressure

and by elevation

●

Though altitude readings can be taken

without calibration, doing so may

produce readings that are very

different from indications by altitude

markers, etc.

1. Enter the Altimeter Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

This displays the current altitude and

enters the Altitude Offset Mode.

Crown

3. Rotate the crown to calibrate the

displayed value to that of a local altitude

(elevation) marker.

Setting range: -3,000 to 10,000 meters (or

-9,840 to 32,800 feet)

Setting unit: 1 meter (or 5 feet)

●

To return the altitude setting to its initial

factory default, press (A) and (C) at the

same time.

4. Push the crown back in and then lock it.

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

Checking the Altitude

Differential from a Reference

Point

After you set a reference altitude, the second

hand of the watch will indicate the difference

between your current altitude and the

reference altitude. This makes it easy to

measure the altitude difference between two

points while climbing or trekking.

●

Setting the Altitude Differential

Measurement Range

1. Enter the Altimeter Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

This displays the altitude for your current

location.

Crown

3. Press (B) twice.

This displays the altitude differential

measurement range.

4. Rotate the crown to select either [100m] or

[1000m].

[100m]: ±100 meters (±328 feet) in 5-

meter (16-foot) units

[1000m]: ±1000 meters (±3280 feet) in

50-meter (164-foot) units

5. Push the crown back in and then lock it.

Watch Operation Guide 5741

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

●

Measuring Altitude

1. Use the contour lines on your map to

determine the altitude differential between

your current location and your destination.

2. Take an altitude reading of your current

location.

Checking the Current Altitude

3. Hold down (D) for at least two seconds to

set your current location’s altitude as the

reference altitude.

This displays [DIFF RESET]

[RESET]

and then your current altitude.

●

The function hand (Altitude Differential

Indicator) will indicate the difference

between the reference altitude and the

current altitude reading. At this time, the

function hand should indicate ±0 m (±0

feet).

Altitude differential indicator

Current location altitude

4. While comparing the difference between

the altitude you found on the map and the

altitude differential indicated by the

watch’s function hand, advance towards

your destination.

●

When the altitude differential you found

on the map is the same as that indicated

by the function hand, it means you are

close to your destination.

Example: Altitude differential of -30 m (-98

feet) (-300 m (-984 feet))

100

−50

−100

Altitude

differential

indicator

Unit: m

Range:

±100 m (1,000 m)

(±328 feet (3,280 feet))

Note

●

The function hand points to (over)

if the current altitude differential is

greater than the setting value, or

(under) if it is less than the setting

value.

If either of these is indicated while

using the ±100 m (328 feet)

measurement range, change the

range setting to ±1,000 m (3,280 feet).

●

The function hand will point [0] if a

reading is outside the allowable

altitude measurement range (-700 m to

10,000 m (-2,300 to 32,800 feet)), or if

a reading error occurs.

Setting the Auto

Measurement Interval

You can select an auto measurement interval

of either five seconds or two minutes.

1. Enter the Altimeter Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

This displays the altitude for your current

location.

Crown

3. Press (B).

This causes the auto measurement

interval to appear on the display.

4. Rotate the crown to select [0’05] or [2’00]

as the auto measurement interval.

[0’05]: Readings taken every second for

the first three minutes, and then every five

seconds for about the next one hour.

[2’00]: Readings taken every second for

the first three minutes, and then every two

minutes for about the next 12 hours.

5. Push the crown back in and then lock it.

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

●

The watch will automatically return to

the Timekeeping Mode if you do not

perform any operation in the Altimeter

Mode for about one hour while [0’05] is

selected as the measurement interval

or about 12 hours while [2’00] is

selected.

Watch Operation Guide 5741

Recording Altitude Readings

Use the procedure below to record altitude

measurements manually. Auto

measurements are also recorded

automatically.

●

Use the Altitude Record Recall Mode to

view or delete records.

Viewing Altitude Records

●

Recording Altitude Data Manually

1. Enter the Altimeter Mode.

Navigating Between Modes

2. Hold down (A) for at least two seconds

until [REC] appears on the display.

This records the current altitude, date,

and time.

●

There is enough memory to hold up to

30 altitude records.

●

Recording altitude data when there are

already 30 records in memory

automatically deletes the oldest record

to make room for the new one.

Note

●

If Route Log is disabled, the watch will

automatically return to normal Altitude

Mode operation following recording of

altitude data.

●

If Route Log is enabled and altitude

data is recorded, the watch will

connect with the phone and transfer

the data to it.

When a connection between the watch

and phone is established, [REC]

changes to [OK], and the second hand

moves from [RC] to

Recording Waypoints and Their

Altitudes (Route Log)

●

[ERR] will appear on the display if

connection fails for some reason.

●

Auto Altitude Data Recording

The altitude data described below is recorded

automatically while the watch is in the

Altimeter Mode. One record each is

maintained in memory for each of these items.

End point

Start point

High Altitude (MAX):

Low Altitude (MIN):

Cumulative Ascent (ASC):

Cumulative Descent (DSC):

* Cumulative ascent and cumulative descent

values are updated whenever there is a

difference of at least ±15 m (±49 feet) from

one reading to the next.

Note

●

Auto recording ends when you exit the

Altimeter Mode. Re-entering the

Altimeter Mode restarts recording of

cumulative values from where it was

stopped when you last exited the

Altimeter Mode.

●

Auto measurement continues if you go

from the Altimeter Mode to another

mode while Route Log is enabled.

●

Every time an auto measurement

operation is performed while Route

Log is enabled, the watch checks the

currently saved values of the following

data items and updates them as

required: MAX, MIN, ASC, DSC.

Recording Waypoints and Their

Altitudes (Route Log)

●

[ERR] will appear on the display if

connection fails for some reason.

Specifying the Altitude

Measurement Unit

You can select either meters (m) or feet (ft) as

the Altimeter Mode display unit.

Important!

●

When Tokyo (TYO) is set as the Home

City, the altitude unit is fixed as meters

(m) and cannot be changed.

1. Enter the Timekeeping Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

The currently selected Home City will

appear on the display.

Crown

Home City

3. Press (B) seven times.

This causes [UNIT] to appear, with [m] or

[ft] flashing.

4. Rotate the crown to select an altitude unit.

[m]: Meters

[ft]: Feet

FeetMeters

5. Push the crown back in and then lock it.

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

Watch Operation Guide 5741

Altitude Reading

Precautions

Effects of Temperature

When taking altitude readings, take the steps

below to keep the watch at as stable a

temperature as possible. Changes in

temperature can affect altitude readings.

●

Take readings with the watch on your wrist.

●

Take readings in an area where

temperature is stable.

Altitude Readings

●

Do not use this watch while skydiving, hang

gliding, paragliding, gyrocopter flying, glider

flying, or engaged in other activities where

altitude changes suddenly.

●

Altitude readings produced by this watch

are not intended for special-purpose or

industrial level use.

●

In an aircraft, the watch measures the in-

cabin pressurized air pressure, so readings

will not match altitudes announced by the

crew.

Altitude Readings (Relative Altitude)

This watch uses International Standard

Atmosphere (ISA) relative altitude data

defined by the International Civil Aviation

Organization (ICAO). Barometric pressure

generally becomes lower as altitude

increases.

Correct measurement may not be possible

under the conditions below.

●

During unstable atmospheric conditions

●

During sudden temperature changes

●

After the watch has been subjected to

strong impact

Barometric Pressure

Measurement

You can use the Barometer Mode to take a

reading of the barometric pressure at your

current location, and to track reading changes

and trends.

Important!

●

Check the information at the link below

to find out how to ensure correct

readings.

Calibrating Barometric Pressure

Readings (Offset)

Barometric Pressure Reading

Precautions

Checking the Current

Barometric Pressure

1. Enter the Barometer Mode.

Navigating Between Modes

Entering the Barometer Mode starts

measurement, and displays the

barometric pressure at your current

location and a barometric pressure graph.

●

After you enter the Barometer Mode,

the watch takes readings about every

five seconds for three minutes. After

that, a measurement is taken about

every two minutes.

Barometric pressure graph

Barometric pressure

●

To retrigger measurement, press (A).

●

To return to the Timekeeping Mode,

hold down (B) for at least two seconds.

Note

●

If the hour and/or minute hand is

located over the digital display when

you perform a barometric pressure

measurement, the hands will

temporarily shift to the 22-second or

38-second position to allow easier

reading of measurement values. The

hands will unshift to their normal

positions after about three seconds.

●

When you enter the Barometer Mode,

the function hand indicates the

barometric pressure difference if the

previous barometric pressure

measurement was retained.

Checking the Change in

Barometric Pressure between

Two Readings

●

The watch will automatically return to

the Timekeeping Mode from the

Barometer mode if you do not perform

any operation for about one hour.

●

The measurement range is 260 hPa to

1,100 hPa (7.65 inHg to 32.45 inHg) (1

hPa (0.05 inHg) units). [- - -] will appear

for the measured value if it is outside

the allowable range.

Watch Operation Guide 5741

Checking Changes in

Barometric Pressure Over

Time

The watch can be configured to show a graph

of pressure readings taken every two hours or

every two minutes.

You can display a graph of barometric

pressure readings for the past 20 hours or the

past 20 minutes. The square (

) at the far

right of the graph indicates the latest

barometric pressure reading.

Barometric

pressure

(1hPa scale)

Time

(2-hour or 2-minute scale)

●

Changing the Measurement Interval of

the Barometric Pressure Graph

You can select a measurement interval of two

hours or two minutes for the barometric

pressure graph.

1. Enter the Barometer Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

This displays the current barometric

pressure.

Crown

3. Press (B).

This causes the current measurement

interval to appear on the display.

4. Rotate the crown to select [0:02] or [2:00]

as the measurement interval.

[0:02]: When the measurement interval of

the barometric pressure graph is two

minutes, measurements are taken every

five seconds.

[2:00]: When the measurement interval of

the barometric pressure graph is two

hours, measurements are taken every two

minutes.

5. Push the crown back in and then lock it.

Note

●

If you switch to the two-minute

measurement interval graph, the

watch will automatically return to the

two-hour measurement interval graph

after 24 hours.

●

Note that the graph will not be

displayed immediately after it is

switched to a two-minute

measurement interval graph.

●

Predicting Upcoming Weather

A trend

like this:

Means this:

Rising barometric pressure,

which indicates that upcoming

weather probably will be fair.

Falling barometric pressure,

which indicates that upcoming

weather probably will be bad.

Note

●

Large changes in barometric pressure

and/or temperature can cause past

data readings to be plotted outside of

the visible area of the graph. Though

plots are not visible, the data is still

maintained in watch memory.

●

The barometric pressure graph is not

displayed while Barometric Pressure

Change Indications are displayed.

Sudden Barometric Pressure

Change Indications

Checking the Change in

Barometric Pressure

between Two Readings

When you perform the procedure below in the

Barometer Mode, the function hand will

indicate the difference between the current

barometric pressure measurement and the

last auto measurement value (taken at two-

hour or two-minute intervals).

1. Enter the Barometer Mode.

Navigating Between Modes

The function hand indicates the

barometric pressure differential

(Barometric Pressure Differential

Indicator).

Example: Barometric pressure differential

of -3 hPa (-0.09 inHg) (two-hour

measurement interval)

−5

−10

Unit: hPa

Range:

±10 hPa (±0.3 inHg)

Pressure

Differential

Indicator

Note

●

The function hand points to (over)

if the current barometric pressure

differential is greater than +10 hPa (0.3

inHg), or

(under) if it is less than -10

hPa (-0.3 inHg).

●

A reading outside the allowable

measurement range of 260 hPa to

1,100 hPa (7.65 inHg to 32.45 inHg) or

any measurement error will cause the

function hand to point to [0].

Watch Operation Guide 5741

Sudden Barometric Pressure

Change Indications

Whenever the watch detects a significant

change in air pressure readings (due to

sudden ascent or descent, or to the passage

of a low pressure or high pressure area), it will

beep to let you know. An arrow will also flash

on the display at this time if the watch is in the

Barometer Mode, or if it is in the Timekeeping

Mode with the barometric pressure graph

displayed. The arrow that appears shows the

direction of the pressure change. These alerts

are called “Barometric Pressure Change

Indications”.

This

indication:

Means this:

Sudden drop in pressure

Sudden rise in pressure

Sustained rise in pressure,

shifting to a fall

Sustained fall in pressure, shifting

to a rise

Important!

●

To ensure correct barometric pressure

change indication operation, enable it

in a location where the altitude is

constant (such as a lodge, camp area,

or on the ocean).

●

A change in altitude causes a change

in air pressure. Because of this, correct

readings are impossible. Do not take

readings while ascending or

descending a mountain, etc.

1. Enter the Barometer Mode.

Navigating Between Modes

2. Hold down (D) for at least two seconds.

If this turns on barometric pressure

change indication, [INFO ON] will stop

flashing and then the [BARO] indicator will

appear on the display.

3. To disable barometric pressure change

indication, hold down (D) again for at least

two seconds.

Note

●

If Barometric Pressure Change

Indications are on, barometric

pressure readings are taken every two

minutes even while the watch is not in

the Barometer Mode.

●

The barometric pressure change

indication becomes disabled

automatically 24 hours after it is

enabled.

●

You will not be able to turn on

barometric pressure change indication

if the watch’s battery level is low.

●

Low battery power will also cause

barometric pressure change indication

to turn off automatically.

Calibrating Barometric

Pressure Readings (Offset)

The watch’s pressure sensor is adjusted at the

factory and normally does not require

calibration. However, you can calibrate the

displayed value if you notice major errors in

readings.

Important!

●

The watch will not be able to produce

correct barometric pressure readings if

you make a mistake during the

calibration procedure. Check to make

sure that the value you use for

calibration produces correct pressure

readings.

1. Enter the Barometer Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

This displays the current barometric

pressure and enters the Barometric

Pressure Offset Mode.

Crown

3. Rotate the crown to change the value.

Setting range: 260 to 1,100 hPa (or 7.65

inHg to 32.45 inHg)

Setting unit: 1 hPa (or 0.05 inHg)

●

To return the barometric pressure

setting to its initial factory default, press

(A) and (C) at the same time.

4. Push the crown back in and then lock it.

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

Watch Operation Guide 5741

Specifying the Barometric

Pressure Unit

You can specify either hectopascals (hPa) or

inches of mercury (inHg) as the display unit for

barometric pressure values.

Important!

●

When Tokyo (TYO) is the Home City,

the barometric pressure unit is fixed as

hectopascals (hPa) and cannot be

changed.

1. Enter the Timekeeping Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

The currently selected Home City will

appear on the display.

Crown

Home City

3. Press (B) eight times.

This causes [UNIT] to appear, with [hPa]

or [inHg] flashing.

4. Rotate the crown to select a barometric

pressure unit.

[hPa]: Hectopascals

[inHg]: Inches of mercury

Inches of mercuryHectopascals

5. Push the crown back in and then lock it.

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

Barometric Pressure

Reading Precautions

●

The barometric pressure graph produced

by this watch can be used to obtain an idea

of upcoming weather conditions. However,

this watch should not be used in place of

precision instruments required for official

weather prediction and reporting.

●

Pressure sensor readings can be affected

by sudden changes in temperature.

Because of this, there may be some error in

the readings produced by the watch.

Temperature

Measurement

The watch can be used to take current air

temperature readings.

Important!

●

Check the information at the link below

to find out how to ensure correct

readings.

Temperature Reading

Precautions

Watch Operation Guide 5741

Checking the Current

Temperature

1. Enter the Thermometer Mode.

Navigating Between Modes

Entering the Thermometer Mode will start

temperature measurement and display

the result.

●

After you enter the Thermometer Mode,

the watch takes readings about every

five seconds for three minutes. After

that, a measurement is taken about

every two minutes.

●

To retrigger measurement, press (A).

Temperature

Note

●

If the hour and/or minute hand is

located over the digital display when

you perform a temperature

measurement, the hands will

temporarily shift to the 22-second or

38-second position to allow easier

reading of measurement values. The

hands will unshift to their normal

positions after about three seconds.

●

The watch will automatically return to

the Timekeeping Mode if you do not

perform any operation in the

Thermometer Mode for about one

hour.

●

The measuring range is -10.0 °C to

60.0 °C (14.0 °F to 140.0 °F) (0.1 °C

(0.2 °F) units). [- - .-] will appear for the

measured value if it is outside the

allowable range.

●

To return to the Timekeeping Mode,

hold down (B) for at least two seconds.

Calibrating Temperature

Readings (Offset)

The watch’s temperature sensor is adjusted at

the factory and normally does not require

calibration. However, you can calibrate the

displayed value if you notice major errors in

readings.

Important!

●

Check to make sure that the value you

use for calibration produces correct

temperature readings.

●

Before calibrating the temperature

reading, remove the watch from your

wrist and leave it in the area where you

plan to measure temperature for about

20 or 30 minutes to allow the case

temperature to become the same as

the air temperature.

1. Enter the Thermometer Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

This displays the current temperature.

Crown

3. Rotate the crown to calibrate the

temperature value.

Calibration unit: 0.1 °C (0.2 °F)

●

To return the barometric pressure

setting to its initial factory default, press

(A) and (C) at the same time.

4. Push the crown back in and then lock it.

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

Specifying the Temperature

Measurement Unit

You can select either Celsius (°C) or

Fahrenheit (°F) as the temperature display

unit.

Important!

●

When Tokyo (TYO) is the Home City,

the temperature unit is fixed as Celsius

(°C) and cannot be changed.

1. Enter the Timekeeping Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

The currently selected Home City will

appear on the display.

Crown

Home City

3. Press (B) nine times.

This causes [UNIT] to appear, with [°C] or

[°F] flashing.

4. Rotate the crown to select a temperature

unit.

[°C]: Celsius

[°F]: Fahrenheit

FahrenheitCelsius

5. Push the crown back in and then lock it.

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

Watch Operation Guide 5741

Temperature Reading

Precautions

Body temperature, direct sunlight, and

humidity all have an effect on temperature

readings. To help ensure more accurate

temperature readings, remove the watch from

your wrist, wipe it dry of any moisture, and

place it in a well-ventilated location not

exposed to direct sunlight. You should be able

to take temperature readings after about 20 to

30 minutes.

Viewing Altitude

Records

You can use the Altitude Record Recall Mode

to view manually recorded and auto recorded

data.

Recording Altitude Readings

Viewing Recorded Data

1. Enter the Altitude Record Recall Mode.

Navigating Between Modes

This displays a record of data recorded in

the Altimeter Mode.

2. Use (A) and (C) to display the data you

want to view.

●

Holding down (A) or (C) scrolls at high

speed.

ACCA

Cumulative Descent

Cumulative Ascent Low Altitude

High Altitude

Auto Record Data

Manually Recorded Data

* Each press of a button scrolls to the top

screen of the next manually recorded

data record, numbered from 1 ([-01-]) to

a maximum of 30 ([-30-]).

Note

●

If there is no data left in memory due to

a data delete operation, error, or some

other reason, [- - - -] or [0] will appear

on the display.

●

If the cumulative ascent (ASC) or

cumulative descent (DSC) value

exceeds 99,999 m (327,995 feet), it

will revert to 0 and continue from there.

●

Pressing (D) returns to the top screen

(record number, DSC, ASC, MAX, or

MIN) of the data that you are viewing.

●

If you do not perform any operation for

about three minutes while in the

Altitude Record Recall Mode, the

watch automatically returns to the

Timekeeping Mode.

●

Manually Recorded Data

After displaying the top screen of a manually

recorded data record (01 through 30), the

record’s data screens appear in sequence as

shown below.

Example: Manually recorded Record 01

2 seconds

1 second

Altitude Time

Recording dateRecord number

Watch Operation Guide 5741

●

Auto Recorded Data

After displaying an auto recorded data record,

you can navigate between the record’s data

screens as shown below.

High altitude and low altitude

Example: High altitude

2 seconds

1 second

Altitude Time

Recording dateData type

Cumulative ascent and cumulative

descent

Example: Cumulative ascent

Date when

accumulation startedData type

Cumulative altitude

2 seconds

1 second

Deleting Data

●

Deleting a Particular Record

1. Enter the Altitude Record Recall Mode.

Navigating Between Modes

2. Use the (A) and (C) buttons to scroll

through the top screens of the records and

display the one you want to delete.

3. Hold down (D) for at least two seconds.

Release the button when [CLEAR]

appears on the display.

This deletes the record you selected.

●

Note that holding down (D) for more

than five seconds will delete all data.

●

Deleting All Records

Hold down (D) for at least five seconds until

[CLEAR ALL] appears on the display. This

indicates that all data was deleted.

Sunrise and Sunset

Times

You can use the watch to check sunrise and

sunset times for your Home City.

Looking Up Today’s Sunrise

and Sunset Times

1. Enter the Sunrise/Sunset Mode.

Navigating Between Modes

This will cause the display to alternate at

two-second intervals between the sunrise

and sunset times for the current date in

your Home City.

Sunset time

Sunrise time

Every two seconds

Watch Operation Guide 5741

Looking Up Sunrise and

Sunset Times by Specifying a

Day

1. Enter the Sunrise/Sunset Mode.

Navigating Between Modes

2. Use (A) and (C) to select the day you want.

This displays the sunrise and sunset

times for the day you specified.

Sunset time

Sunrise time

Every two seconds

Note

●

Sunrise and sunset times are

calculated internally by the watch.

Calculation results may contain errors,

with greater errors occurring at higher

latitudes.

●

[--:--] is displayed when calculation

results cannot be output for some

reason.

●

If you do not perform any operation for

about three minutes while in the

Sunrise/Sunset Mode, the watch

automatically returns to the

Timekeeping Mode.

Stopwatch

The stopwatch can be used to perform 1/100

second elapsed time measurement up to 23

hours, 59 minutes, 59.99 seconds.

It can also measure split times.

Measuring Elapsed Time

1. Enter the Stopwatch Mode.

Navigating Between Modes

2. Use the operations below to measure

elapsed time.

Stop

Resume

Stop

Start

Hours, minutes, seconds, 1/100 seconds

3. Press (C) to reset the measurement time

to all zeros.

Measuring a Split Time

1. Enter the Stopwatch Mode.

Navigating Between Modes

2. Use the operations below to measure

elapsed time.

Stop

Split release

Split

Start

Hours, minutes, seconds, 1/100 seconds

3. Press (C) to reset the measurement time

to all zeros.

Timing the First and Second

Place Finishers

1. Enter the Stopwatch Mode.

Navigating Between Modes

2. Use the operations below to measure

elapsed time.

2nd Finisher*

1st Finisher*

Start

* Displays the time of the first finisher.

Hours, minutes, seconds, 1/100 seconds

3. Press (C) to display the time of the second

place finisher.

4. Press (C) to reset the measurement time

to all zeros.

Watch Operation Guide 5741

Timer

The timer counts down from a start time

specified by you. A beeper sounds when the

end of the countdown is reached.

●

The beeper will not sound if battery power

is low.

Using the CASIO WATCHES

Phone App to Configure

Timer Settings

If the watch is paired with a phone, you can

also use the CASIO WATCHES phone app to

set the timer start time.

Configuring Watch Settings

Setting a Start Time

The start time can be set in 1-minute units up

to 60 minutes.

1. Enter the Timer Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

This causes the minutes digits to flash.

Crown

Minutes

3. Rotate the crown to change the timer start

time minutes.

4. Push the crown back in and then lock it.

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

Using the Timer

1. Enter the Timer Mode.

Navigating Between Modes

2. Use the operations below to perform a

timer operation.

(Time up)

Resume

Pause

(Countdown starts)

Start

●

A beeper sounds for 10 seconds to let

you know when the end of a countdown

is reached.

●

You can reset a paused countdown to

its start time, by pressing (C).

3. Press any button to stop the tone.

Hand Alignment

Adjustment

Strong magnetism or impact can cause the

time indicated by the analog hands to become

different from the time on the display. If this

happens, adjust hand alignment.

Using the CASIO WATCHES

Phone App to Adjust Hand

Alignment

If the watch is paired with a phone, you can

also use CASIO WATCHES to adjust hand

alignment.

Adjusting Hand Alignment

1. Enter the Timekeeping Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

The currently selected Home City will

appear on the display.

●

This causes the second hand to move

to 12 o’clock.

Crown

Home City

Watch Operation Guide 5741

3. Hold down (A) for at least five seconds.

Release the button when [HAND SET]

appears on the display and the second

hand completes one full rotation.

[HAND ADJ] flashes, and hour, minute,

and second hand auto calibration starts.

●

After auto alignment is complete, the

hands should be in the positions shown

below.

Hour handMinute hand

Second hand

4. Press (B).

This enables adjustment of the bearing

hand alignment.

Bearing hand

5. If the bearing hand is not aligned with 12

o’clock, rotate the crown to align it

correctly.

6. Press (B).

This enables adjustment of the function

hand alignment.

Function hand

7. If the function hand is not aligned with 12

o’clock, rotate the crown to align it

correctly.

8. Push the crown back in and then lock it.

This returns the hands to normal

timekeeping.

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

Important!

●

After hand position adjustment is

complete, check to make sure that the

proper time is being indicated by the

hands in the Timekeeping Mode and

on the display. If the hands are

misaligned, perform steps 2 through 8

again.

Other Settings

This section explains other watch settings you

can configure.

Enabling the Button

Operation Tone

Use the procedure below to enable or disable

the tone that sounds when you press a button.

1. Enter the Timekeeping Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

The currently selected Home City will

appear on the display.

Crown

Home City

3. Press (B) twice.

This causes [KEY♪] or [MUTE] to flash on

the display.

4. Rotate the crown to select either [KEY♪]

or [MUTE].

[KEY♪]: Operation tone enabled.

[MUTE]: Operation tone muted.

5. Push the crown back in and then lock it.

Watch Operation Guide 5741

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

●

Note that alarm and timer tones still

sound even while the operation tone is

muted.

Configuring Power Saving

Function Settings

1. Enter the Timekeeping Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

The currently selected Home City will

appear on the display.

Crown

Home City

3. Press (B) six times.

This displays [P.SAVE].

4. Rotate the crown to turn the setting on or

off.

[ON]: Power Saving enabled.

[OFF]: Power Saving disabled.

5. Push the crown back in and then lock it.

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

●

For details about Power Saving, refer

to the information below.

Power Saving Function

Resetting Watch Settings

This section explains how to return the watch

settings below to their initial factory defaults.

●

Watch Settings

●

Compass

●

Altimeter

●

Barometer

●

Thermometer

●

Altitude recording

●

Stopwatch

●

Timer

●

Alarm

1. Enter the Timekeeping Mode.

Navigating Between Modes

2. Loosen the crown and then pull it out.

The currently selected Home City will

appear on the display.

Crown

Home City

3. Hold down (D) for at least seven seconds.

Release the button when the displayed

message changes from [CLEAR ALL] to

[CLEAR].

4. Push the crown back in and then lock it.

Watch Operation Guide 5741

Important!

●

Reset cannot be performed while

Route Log is enabled.

Recording Waypoints and Their

Altitudes (Route Log)

Note

●

If you do not perform any operation for

about two minutes after pulling out the

crown, crown operations will

automatically become disabled. If that

happens, push the crown back in and

then pull it out again.

●

Resetting the watch also deletes

information for pairing the watch with a

phone, and unpair them.

Specifications

Accuracy :

±15 seconds per month when time

correction by time calibration signal

reception or by communication with a

phone is not possible.

Basic Functions :

Analog

Hour, minute (moves every 10 seconds),

second

Digital

Hour, minute, second, month, day, day of

the week

Barometric pressure graph

a.m. (A)/p.m. (P)/24-hour timekeeping

Full Auto Calendar (2000 to 2099)

Signal Receive Functions :

Auto receive, manual receive

Last receive date and time display

Auto summer time switching

Auto transmitter selection (for JJY, MSF/

DCF77)

Receivable call signs:

JJY (40 kHz/60 kHz), WWVB (60 kHz), MSF

(60 kHz), DCF77 (77.5 kHz), BPC (68.5

kHz)

Auto Receive enable/disable

Digital Compass :

Measurement range: 0° to 359°

Measurement Units: LCD: 1°, Analog: 6°

16-direction display

Continuous Bearing Measurement (1

minute)

North Indication Hand

Auto level correction

Bearing calibration (3-point calibration,

figure 8 calibration, magnetic declination

calibration)

Bearing memory

Altimeter (relative altitude) :

Measuring range: -700 to 10,000 m (or

-2,300 to 32,800 ft.)

Display range: -3,000 to 10,000 m (or -9,840

to 32,800 ft.)

(Altitude calibration can be used to display

any 10,700 m within the range above.)

Measuring unit: 1 m (or 5 ft.)

Auto measurement interval (2 minutes, 5

seconds)

Altitude calibration

Altitude graph

Altitude differential measurement (-100 to

+100 m/-1,000 to +1,000 m (or -325 to +325

ft./-3,280 to +3,280 ft.))

Altitude differential indicator

Altitude Memory

Manually Recorded Data

One-press recording of altitude, date

(year, month, day), and time. Up to 30

records.

Auto Record Data

One record of high altitude, low

altitude, cumulative ascent, cumulative

descent

Barometer :

Measurement range: 260 to 1,100 hPa (or

7.65 to 32.45 inHg)

Display range: 260 to 1,100 hPa (or 7.65 to

32.45 inHg)

Measurement unit: 1 hPa (or 0.05 inHg)

Calibration

Barometric pressure graph

Graph interval setting (2 minutes/2 hours)

Barometric pressure differential indicator

Barometric pressure change indications

Temperature :

Measuring range: -10.0 to 60.0 °C (or 14.0

to 140.0 °F)

Display range: -10.0 to 60.0 °C (or 14.0 to

140.0 °F)

Measuring unit: 0.1 °C (or 0.2 °F)

Calibration

Sensor Accuracy :

Direction sensor

Measurement accuracy: Within ±10°

(Guaranteed accuracy temperature

range: 10 °C to 40 °C (50 °F to 104 °F))

Bearing hand indication: Within ±2

gradations

Pressure sensor

Measurement accuracy: Within ±3 hPa

(0.1 inHg)

(Altimeter measurement accuracy:

Within ±75 m (246 ft.))

●

Guaranteed accuracy temperature

range: -10 °C to 40 °C (14 °F to 104 °F)

●

Strong impact or prolonged exposure to

temperature extremes may negatively

affect accuracy.

Temperature Sensor

Measurement accuracy: Within ±2 °C

(3.6 °F)

(Guaranteed accuracy temperature

range: -10 °C to 60 °C (14 °F to 140 °F))

Watch Operation Guide 5741

Sunrise/Sunset Functions :

Sunrise/Sunset times display ([--:--]

displayed when calculation results cannot

be output for some reason.)

Day select

Stopwatch :

Measuring unit: 1/100 second

Measuring range:

23 hours, 59 minutes, 59.99 seconds (24

hours)

Measurement Functions:

Elapsed time, cumulative time, split

times, 1st and 2nd place finisher times

Timer :

Setting unit: 1 minute

Measuring range: 60 minutes

Countdown unit: 1 second

Time up alert duration: 10 seconds

Alarm :

Daily alarm

Number of alarms: 5

Setting units: Hours, minutes

Alarm beeper duration: 20 seconds

Hourly time signal: Beep every hour on the

hour

World Time :

Current time in 55 cities (38 time zones) and

UTC (Coordinated Universal Time)

Summer time

City swapping

One-touch UTC display

Mobile Link :

Auto Time Correction

Time setting adjusted automatically at

preset time.

One-touch Time Correction

Manual connection and time adjustment

Phone finder

Watch operation sounds the alert sound

of the phone.

World Time

A selection of more than 300 World Time

cities

Auto Daylight Saving Time (summer time)

switching

Automatic switching between standard

time and summer time.

Route Log

Recording of waypoints and their

altitudes

Location Indicator

Shows the bearing and distance to a

location registered on the watch.

Auto altitude calibration

Automatic altitude calibration at a preset

time

Timer Settings

Alarm Settings

Mode sort sequence and number of modes

setting

Altimeter settings

Hand alignment correction

TIME&PLACE

Communication Specifications

Bluetooth

Frequency band: 2400 MHz to 2480 MHz

Maximum transmission power: 0 dBm (1

mW)

Communication range: Up to 2 meters

(depends on environment)

Other :

High-brightness double LED light: Face

LED light and LCD LED backlight (Full Auto

Light, afterglow, selectable illumination

duration (1.5 or 3 seconds)); auto hand

alignment correction; power saving; low

battery alert; operation tone enable/disable;

hand shift

Power Supply :

Solar panel and one rechargeable battery

(Type: CTL1616)

Battery nominal voltage: 2.3V

Battery operating time: Approximately 6

months

Conditions:

Auto time correction using a smartphone:

4 times/day

Alarm: Once (20 seconds)/day

Illumination: Once (1.5 seconds)/day

Display and second hand movement: 18

hours/day

Direction readings: 60 seconds

continuous, 20 times/month

Climbs: 1/month

ー　

Altitude Measurement

Every second for 3 minutes + every 5

seconds for 57 minutes

ー　

Barometric Pressure Change

Indications

Every second for 3 minutes + every 2

minutes for 23 hours and 57 minutes

ー　

Route Log Measurement

Every 2 minutes for 12 hours

ー　

Location Indicator Measurement

10 times for 3 minutes each

Barometric pressure graph

measurements: 12 times/day

Specifications are subject to change without

notice.

Other Information

This section provides non-operational

information you also need to know. Refer to

this information as required.

City Table

City Offset

UTC

Coordinated

Universal Time

LIS:

LISBON *

Lisbon

LON:

LONDON *

London

MAD:

MADRID *

Madrid

PAR:

PARIS *

Paris

ROM:

ROME *

Rome

BER:

BERLIN *

Berlin

STO:

STOCKHOLM *

Stockholm

ATH:

ATHENS *

Athens

CAI:

CAIRO

Cairo

JRS:

JERUSALEM

Jerusalem

MOW:

MOSCOW

Moscow

JED:

JEDDAH

Jeddah

THR:

TEHRAN

Tehran +3.5

DXB:

DUBAI

Dubai +4

KBL:

KABUL

Kabul +4.5

KHI:

KARACHI

Karachi +5

DEL:

DELHI

Delhi +5.5

KTM:

KATHMANDU

Kathmandu +5.75

DAC:

DHAKA

Dhaka +6

RGN:

YANGON

Yangon +6.5

BKK:

BANGKOK

Bangkok +7

Watch Operation Guide 5741

City Offset

SIN:

SINGAPORE

Singapore

HKG:

HONG KONG *

Hong Kong

BJS:

BEIJING *

Beijing

TPE:

TAIPEI *

Taipei

EUC:

EUCLA

Eucla +8.75

SEL:

SEOUL *

Seoul

TYO:

TOKYO *

Tokyo

ADL:

ADELAIDE

Adelaide +9.5

GUM:

GUAM

Guam

+10

SYD:

SYDNEY

Sydney

LDH:

LORD HOWE

ISLAND

Lord Howe

Island

+10.5

NOU:

NOUMEA

Noumea +11

WLG:

WELLINGTON

Wellington +12

CHT:

CHATHAM

ISLAND

Chatham

Islands

+12.75

TBU:

NUKUALOFA

Nuku’alofa +13

CXI:

KIRITIMATI

Kiritimati +14

BAR:

BAKER ISLAND

Baker Island -12

PPG:

PAGO PAGO

Pago Pago -11

HNL:

HONOLULU

Honolulu -10

NHV:

MARQUESAS

ISLANDS

Marquesas

Islands

-9.5

ANC:

ANCHORAGE

Anchorage -9

YVR:

VANCOUVER *

Vancouver

-8

LAX:

LOS ANGELES *

Los Angeles

YEA:

EDMONTON *

Edmonton

-7

DEN:

DENVER *

Denver

City Offset

MEX:

MEXICO CITY *

Mexico City

-6

CHI:

CHICAGO *

Chicago

NYC:

NEW YORK *

New York -5

YHZ:

HALIFAX *

Halifax -4

YYT:

ST. JOHN’S

St. John’s -3.5

BUE:

BUENOS AIRES

Buenos Aires

-3

RIO:

RIO DE JANEIRO

Rio de Janeiro

FEN:

F. DE NORONHA

Fernando de

Noronha

-2

RAI:

PRAIA

Praia -1

* Cities where time calibration signal

reception is possible.

●

The information in the above table is current

as of July 2024.

●

Time zones may change and UTC

differentials may become different from

those shown in the table above.

Summer Time Table

When [AUTO] is selected for a city that

observes summer time, switching between

standard time and summer time will be

performed automatically at the timing shown

in the table below.

Note

●

Summer time start and end dates for

your current location may be different

from those shown below. If this

happens, you can have new summer

time information for your Home City

and World Time City sent to the watch

by connecting the watch with a phone.

If the watch is not connected with a

phone, you can change the summer

time setting manually.

City Name

Summer Time

Start

Summer Time

End

Lisbon

01:00, last

Sunday in March

02:00, last

Sunday in

October

London

01:00, last

Sunday in March

02:00, last

Sunday in

October

Madrid

02:00, last

Sunday in March

03:00, last

Sunday in

October

Paris

02:00, last

Sunday in March

03:00, last

Sunday in

October

Rome

02:00, last

Sunday in March

03:00, last

Sunday in

October

Berlin

02:00, last

Sunday in March

03:00, last

Sunday in

October

Stockholm

02:00, last

Sunday in March

03:00, last

Sunday in

October

Athens

03:00, last

Sunday in March

04:00, last

Sunday in

October

Jerusalem

02:00, the Friday

before the last

Sunday in March

02:00, last

Sunday in

October

Sydney,

Adelaide

02:00, first

Sunday in

October

03:00, first

Sunday in April

Lord Howe

Island

02:00, first

Sunday in

October

02:00, first

Sunday in April

Wellington

02:00, last

Sunday in

September

03:00, first

Sunday in April

Chatham

Islands

02:45, last

Sunday in

September

03:45, first

Sunday in April

Watch Operation Guide 5741

City Name

Summer Time

Start

Summer Time

End

Anchorage

02:00, second

Sunday in March

02:00, first

Sunday in

November

Vancouver

02:00, second

Sunday in March

02:00, first

Sunday in

November

Los

Angeles

02:00, second

Sunday in March

02:00, first

Sunday in

November

Edmonton

02:00, second

Sunday in March

02:00, first

Sunday in

November

Denver

02:00, second

Sunday in March

02:00, first

Sunday in

November

Chicago

02:00, second

Sunday in March

02:00, first

Sunday in

November

New York

02:00, second

Sunday in March

02:00, first

Sunday in

November

Halifax

02:00, second

Sunday in March

02:00, first

Sunday in

November

St. John’s

02:00, second

Sunday in March

02:00, first

Sunday in

November

●

The information in the above table is current

as of July 2024.

Supported Phone Models

For information about phones that can

connect with the watch, visit the CASIO

website.

https://world.casio.com/os_mobile/wat/

Copyrights and Registered

Trademarks

●

The Bluetooth

word mark and logos are

registered trademarks owned by the

Bluetooth SIG, Inc. and any use of such

marks by CASIO Computer Co., Ltd. is

under license.

●

iPhone and App Store are trademarks of

Apple Inc. in the United States and other

countries.

●

IOS is a trademark or registered trademark

of Cisco Systems, Inc.

●

Android and Google Play

are trademarks

or registered trademarks of Google LLC.

●

Other company names and product names

used herein are trademarks or registered

trademarks of their respective companies.

Watch Operation Guide 5741

Troubleshooting

Signal Reception (Time

Calibration Signal)

The watch cannot perform a receive

operation.

Is the watch’s battery charged?

Signal reception is not possible while

battery power is low. Keep the watch

exposed to light until it recharges

sufficiently.

Charging

Is the watch in the Timekeeping Mode?

Time signal receive is performed only

while the watch is in the Timekeeping

Mode. Return to the Timekeeping Mode.

Navigating Between Modes

Is your Home City setting correct for your

location?

The watch will not indicate the correct time

if the Home City setting is wrong. Change

your Home City setting so it correctly

reflects your location.

Setting a Home City

After checking the above, the watch still

cannot perform a receive operation.

Time calibration signal reception is not

possible under the conditions described

below.

●

When watch is at Level 2 power saving

●

When the crown is pulled out

●

Timer countdown operation in progress

If successful reception is not possible for

some reason, you can adjust the time and

day settings manually.

The signal receive operation always

fails.

Is the watch in a location that is appropriate

for signal reception?

Check your surroundings and move the

watch to a location where signal reception

is better.

Appropriate Signal Reception Location

Did you avoid touching the watch while the

receive operation was in progress?

Minimize movement of the watch and do

not perform any watch operation while a

receive operation is in progress.

Is there an alarm configured to sound

during the same period that the signal

receive operation is performed?

Receive stops if an alarm operation starts

while it is being performed. Disable the

alarm.

Turning Off an Alarm or the Hourly

Time Signal

Is the signal transmitter in your area

transmitting a signal?

The transmitter of the time calibration may

not be transmitting a signal.

Try again later.

Signal reception should have been

successful, but the watch’s time and/

or day is wrong.

Is the indicated time off by one hour or by

30 minutes?

The watch may be using the wrong time

offset. Specify the area you want to use as

your Home City.

Setting a Home City

Is the indicated hour and/or minute wrong?

The hour hand and/or minute hand may

be out of alignment. Perform the

procedure under “Hand Alignment

Adjustment” to auto adjust hour and

minute hand alignment.

Hand Alignment Adjustment

After checking the above, the time and/or

day settings is still wrong.

Adjust time and day settings manually.

Using Watch Operations to Adjust the

Time Setting

I can’t pair the watch with a

phone.

I’ve never been able to establish a

(pairing) connection between the

watch and phone.

Are you using a supported phone model?

Check if the phone model and its

operating system are supported by the

watch.

For information about supported phone

models, visit the CASIO Website.

https://world.casio.com/os_mobile/wat/

Did you install the CASIO WATCHES

phone app on your phone?

The CASIO WATCHES phone app needs

to be installed on your phone in order to

connect with the watch.

Install the app on your phone.

Are your phone’s Bluetooth settings

configured correctly?

Configure the phone’s Bluetooth settings.

For details about setting procedures, see

your phone documentation.

iPhone Users

●

“Settings”

“Bluetooth”

●

“Settings”

“Privacy”

“Bluetooth”

“CASIO WATCHES”

Android Users

●

Enable Bluetooth.

Other than the above.

Some phones need to have BT Smart

disabled to use the CASIO WATCHES

phone app. For details about setting

procedures, see your phone

documentation.

On the Home Screen, tap: “Menu”

“Settings”

“Bluetooth”

“Menu”

“BT Smart settings”

“Disable”.

Watch Operation Guide 5741

I can’t reconnect the watch

and phone.

The watch will not re-connect with the

phone after they are disconnected.

Is the CASIO WATCHES phone app

running?

The watch cannot re-connect with your

phone unless CASIO WATCHES is

running on the phone. On your phone’s

Home Screen, tap the “CASIO

WATCHES” icon. Next, on the watch, hold

down (B) for at least five seconds.

Have you tried turning your phone off and

then back on again?

Turn your phone off and then back on, and

then tap the “CASIO WATCHES” icon.

Next, on the watch, hold down (B) for at

least five seconds.

Is a timer countdown operation in

progress?

Connection with a phone is not possible

while there is 30 seconds or less

remaining on a countdown timer

operation. Stop the countdown operation

before connecting with the phone.

I can’t connect while my phone is in

the Airplane Mode.

Connection with the watch is not possible

while your phone is in the Airplane Mode. After

disabling the phone’s Airplane Mode, go to the

phone’s Home Screen and tap the “CASIO

WATCHES” icon. Next, on the watch, hold

down (B) for at least five seconds.

I changed the phone’s Bluetooth

from enabled to disabled, and now I

can’t connect anymore.

On your phone, re-enable Bluetooth, and then

go to the Home Screen and tap the “CASIO

WATCHES” icon. Next, on the watch, hold

down (B) for at least five seconds.

I can’t connect after turning off the

phone.

Turn your phone off and then back on, and

then tap the “CASIO WATCHES” icon. Next,

on the watch, hold down (B) for at least five

seconds.

Phone-Watch Connection

I can’t establish a connection

between the phone and watch.

Have you tried turning your phone off and

then back on again?

Turn your phone off and then back on, and

then tap the “CASIO WATCHES” icon.

Next, on the watch, hold down (B) for at

least five seconds.

Has the watch been re-paired with the

phone?

After deleting the pairing information from

the CASIO WATCHES phone app and

your phone, re-pair the watch and phone.

Deleting Pairing Information from the

CASIO WATCHES phone app

Pair the watch with a phone.

If you are unable to establish a

connection...

After deleting pairing information from the

watch, re-pair it with your phone.

Deleting Pairing Information from the

Watch

Pair the watch with a phone.

Changing to a Different

Phone Model

Connecting the current watch to

another phone.

Delete the pairing information from your watch

and then pair it with the phone you want to

connect with.

If you purchase another phone

Watch Operation Guide 5741

Auto Time Correction by

Bluetooth Connection (Time

Correction)

When does the watch correct its

time?

The watch will connect with the phone and

perform auto time correction at around 12:30

a.m., 6:30 a.m., 12:30 p.m. and 6:30 p.m. The

connection is automatically terminated after

auto time correction is complete.

Auto time correction is performed,

but the time setting is not correct.

Is auto time correction not being

performed according to its normal

schedule?

Note that auto time correction is not

performed for 24 hours after swapping of

the Home Time and World Time, or after

the time setting is corrected manually on

the watch. Auto time correction will

resume 24 hours after either of the above

operations is performed.

Is auto time correction enabled?

Auto time correction is not performed at

the scheduled times if it is not enabled.

Enable auto time correction.

Using the Watch in a Medical Facility or

Aircraft

Time is not displayed correctly.

If your phone is unable to receive a signal

because you are outside its service range or

for some other reason, the watch may not be

able to display the correct time. If this

happens, connect the phone to its network

and then correct the time setting.

Altitude Measurement

Readings produce different results at

the same location.

Watch readings are different from

altitude information available from

other sources.

Correct altitude readings are not

possible.

Relative altitude is calculated based on

changes in barometric pressure measured by

the watch’s pressure sensor. This means that

barometric pressure changes can cause

readings taken at the same location to be

different. Also note that the value displayed by

the watch may be different from the actual

elevation and/or sea level elevation indicated

for the area where you are located. When

using the watch’s altimeter while mountain

climbing, it is recommended that you regularly

calibrate its readings in accordance with local

altitude (elevation) indications.

Calibrating Altitude Readings (Offset)

Following a relative altitude reading,

the watch’s function hand points to

[0].

The function hand moves to [0] if a reading is

outside the allowable altitude measurement

range (-700 m to 10,000 m (-2,300 feet to

32,800 feet)). If [ERR] is displayed, there may

be a problem with the sensor.

Checking the Altitude Differential from a

Reference Point

[ERR] appears during measurement.

There may be a problem with the sensor. Try

taking another measurement.

If [ERR] keeps appearing after multiple

measurement attempts, contact a CASIO

service center or your original retailer.

Digital Compass

The entire display is flashing.

Abnormal magnetism has been detected.

Move away from any potential source of

strong magnetism and try taking a reading

again.

Digital Compass Reading Precautions

●

If the display flashes again, it could mean

that the watch itself has become

magnetized. Move away from any potential

source of strong magnetism, perform

bidirectional calibration, and then try taking

a reading again.

Calibrating Compass Readings

[ERR] appears during measurement.

There is a problem with the sensor or there

may be a source strong magnetic force

nearby. Move away from any potential source

of strong magnetism and try taking a reading

again. If [ERR] keeps appearing after multiple

measurement attempts, contact a CASIO

service center or your original retailer.

Digital Compass Reading Precautions

[ERR] appears on the display

following direction calibration.

[ERR] on the display could indicate a sensor

problem.

●

If [ERR] disappears after about one second,

try performing 2-point calibration again.

●

If [ERR] keeps appearing after multiple

attempts, contact a CASIO service center or

your original retailer.

Direction information indicated by the

watch is different from that indicated

by a backup compass.

Move away from any potential source of

strong magnetism, perform direction

calibration, and then try taking a reading

again.

Calibrating Compass Readings

Digital Compass Reading Precautions

Readings at the same location

produce different results.

Cannot take readings indoors.

Move away from any potential source of

strong magnetism and try taking a reading

again.

Digital Compass Reading Precautions

Watch Operation Guide 5741

Location Memory

Location Memory does not work.

Is the watch paired with a phone?

The watch needs to be paired with a

phone for Location Memory to work. Pair

the watch with a phone.

Pair the watch with a phone.

Are phone settings configured to acquire

location information?

The phone needs to be used to allow use

of CASIO WATCHES location information

for Location Memory to work. Allow use of

location information.

Are phone settings configured to acquire

GPS information?

You may experience problems acquiring

GPS information in environments like the

ones described below.

●

Where the view of the sky above is

narrow

●

Near trees or buildings

●

Near a train station, airport, or other

congested areas

●

Locations where there is heavy traffic

and radio wave interference

●

Near railway aerial wires, high-voltage

lines, TV towers, etc.

Signal reception is not possible in the

locations described below.

●

Where the sky is not visible

●

Underground, in a tunnel, under water

●

Indoors (Reception may be possible

near a window.)

●

Near radio communication equipment

or other devices that generate

electromagnetic waves

I want to change the recorded

location information.

You can use the CASIO WATCHES phone

app to edit location information.

Configuring Watch Settings

Location Indicator

Location Indicator does not appear

on the display.

Is the watch paired with a phone?

The watch needs to be paired with a

phone for Location Indicator to work. Pair

the watch with a phone.

Pair the watch with a phone.

Is Location Memory information being

recorded?

Location information needs to be

recorded in Location Memory for Location

Indicator to work. Record location

information in Location Memory.

Recording Your Current Location

(Location Memory)

Are phone settings configured to acquire

location information?

The phone needs to be used to allow use

of CASIO WATCHES location information

for Location Indicator to work. Allow use

of location information.

Are phone settings configured to acquire

GPS information?

You may experience problems acquiring

GPS information in environments like the

ones described below.

●

Where the view of the sky above is

narrow

●

Near trees or buildings

●

Near a train station, airport, or other

congested areas

●

Locations where there is heavy traffic

and radio wave interference

●

Near railway aerial wires, high-voltage

lines, TV towers, etc.

Signal reception is not possible in the

locations described below.

●

Where the sky is not visible

●

Underground, in a tunnel, under water

●

Indoors (Reception may be possible

near a window.)

●

Near radio communication equipment

or other devices that generate

electromagnetic waves

Barometric Pressure

Measurement

Following a relative barometric

pressure reading, the watch’s

function hand points to [0].

If a reading is outside the allowable barometric

pressure measurement range (260 hPa to

1,100 hPa (or 7.65 inHg to 32.45 inHg)), the

function hand will point to [0]. If [ERR] is

displayed, there may be a problem with the

sensor.

Checking the Change in Barometric

Pressure between Two Readings

[ERR] appears during measurement.

There may be a problem with the sensor. Try

taking another measurement. If [ERR] keeps

appearing after multiple measurement

attempts, contact a CASIO service center or

your original retailer.

Temperature Measurement

[ERR] appears during measurement.

There may be a problem with the sensor. Try

taking another measurement. If [ERR] keeps

appearing after multiple measurement

attempts, contact a CASIO service center or

your original retailer.

World Time

The time for a World Time City is not

correct.

The summer time setting (standard time/

summer time) may be wrong.

Setting the World Time City

Watch Operation Guide 5741

Alarm and Hourly Time

Signal

An alarm does not sound.

Is the watch’s battery charged?

Keep the watch exposed to light until it

recharges sufficiently.

Charging

The crown is pulled out.

The alarm will not sound while the crown

is pulled out. Push the crown back in to its

normal position.

Other than the above.

The alarm’s settings may not be

configured. Configure the alarm settings.

Configuring Alarm Settings

The hourly time signal does not

sound.

Is the watch’s battery charged?

Keep the watch exposed to light until it

recharges sufficiently.

Charging

The crown is pulled out.

The hourly time signal will not sound while

the crown is pulled out. Push the crown

back in to its normal position.

Other than the above.

The hourly time signal may be disabled.

Enable the hourly time signal.

Enabling the Hourly Time Signal

Hand Movement and Watch

Screen Indications

I don’t know what mode the watch is

in.

You can determine the current mode by

checking the watch display. Use (B) to

navigate between modes.

Navigating Between Modes

The second hand is jumping at two-

second intervals.

Battery power is low. Keep the watch exposed

to light until it recharges sufficiently.

Charging

All hands are stopped and buttons do

not work.

The battery is dead. Keep the watch exposed

to light until it recharges sufficiently.

Charging

The hands suddenly start moving at

high speed.

This is due to the reason (or one of the

reasons) below, and does not indicate

malfunction. Simply wait until normal hand

movement resumes.

●

The watch is recovering from a power

saving state.

Power Saving Function

●

A time calibration signal is being received

and the time setting is being adjusted.

Time Adjustment Using a Time Signal

●

Watch is connected with a phone to correct

its time setting.

Auto Time Correction

Hands are stopped and buttons do

not work.

The watch is in the charge recovery mode.

Wait until the recovery process is complete

(for about 15 minutes). The watch will recover

more quickly if you place it in a brightly lit

location.

Why is the current time indicated by

the watch is off by a certain amount

of time (nine hours, three hours and

15 minutes, etc.)?

The city setting is not correct. Select the

correct setting.

Setting a Home City

The current time indicated by the

watch is off by one hour or 30

minutes.

The summer time setting may not be correct.

Select the correct setting.

Setting a Home City

The time indicated by the hands is

different from the displayed time.

Strong magnetism or impact can cause the

hands to go out of alignment. Adjust hand

alignment.

Adjusting Hand Alignment

●

Check the information below to find out how

to align the hands manually.

Hand Alignment Adjustment

Crown Operations

Nothing happens when I rotate the

crown.

If you do not perform any operation for at least

two minutes after pulling out the crown

(approximately 30 minutes in the case of hand

alignment), crown operations will

automatically become disabled. If that

happens, push the crown back in and then pull

it out again.

Using the Crown

Watch Operation Guide 5741

Charging

The watch does not work even

though it is exposed to light.

The watch stops operating whenever the

battery goes dead. Keep the watch exposed

to light until it recharges sufficiently.

Checking the Charge Level

[RECOVER] is flashing on the

display.

The watch is in the charge recovery mode.

Wait until the recovery process is complete

(about 15 minutes). The watch recovers more

quickly if you place it in a brightly lit location.

●

If a sensor measurement operation,

illumination and/or other power-intensive

functions are used within a short period of

time, the charging capacity of the battery

drops and causes the watch to go into a

charge recovery mode. Function availability

is temporarily limited, but functionality

returns after the battery recovers.

Checking the Charge Level

[CHARGE] is flashing on the digital

display.

The charge level of the watch is extremely low.

Immediately expose the watch to light to

charge it.

Checking the Charge Level

Other

I can’t find the information I need

here.

Visit the website below.

https://world.casio.com/support/

Watch Operation Guide 5741

Precautions

Operating Precautions

●

Water Resistance

●

The information below applies to watches

with WATER RESIST or WATER

RESISTANT marked on the back cover.

Water Resistance Under Daily Use

Marking on watch front or on

back cover

No BAR

mark

Example of Daily Use

Hand washing, rain Yes

Water-related work, swimming No

Windsurfing No

Skin diving No

Enhanced Water Resistance Under Daily

Use

5 Atmospheres

Marking on watch front or on

back cover

5BAR

Example of Daily Use

Hand washing, rain Yes

Water-related work, swimming Yes

Windsurfing No

Skin diving No

10 Atmospheres

Marking on watch front or on

back cover

10BAR

Example of Daily Use

Hand washing, rain Yes

Water-related work, swimming Yes

Windsurfing Yes

Skin diving Yes

20 Atmospheres

Marking on watch front or on

back cover

20BAR

Example of Daily Use

Hand washing, rain Yes

Water-related work, swimming Yes

Windsurfing Yes

Skin diving Yes

●

Do not use your watch for scuba diving or

other types of diving that requires air tanks.

●

Watches that do not have WATER RESIST

or WATER RESISTANT marked on the

back cover are not protected against the

effects of sweat. Avoid using such a watch

under conditions where it will be exposed to

large amounts of sweat or moisture, or to

direct splashing with water.

●

Even if a watch is water resistant, note the

usage precautions described below. Such

types of use reduce water resistance

performance and can cause fogging of the

glass.

ー　

Do not operate the crown or buttons while

your watch is submersed in water or wet.

ー　

Avoid wearing your watch while in the

bath.

ー　

Do not wear your watch while in a heated

swimming pool, sauna, or any other high

temperature/high humidity environment.

ー　

Do not wear your watch while washing

your hands or face, while doing

housework, or while performing any other

task that involves soaps or detergents.

●

After submersion in seawater, use plain

water to rinse all salt and dirt from your

watch.

●

To maintain water resistance, have the

gaskets of your watch replaced periodically

(about once every two or three years).

●

A trained technician will inspect your watch

for proper water resistance whenever you

have its battery replaced. Battery

replacement requires the use of special

tools. Always request battery replacement

from your original retailer or from an

authorized CASIO service center.

●

Some water-resistant watches come with

fashionable leather bands. Avoid

swimming, washing, or any other activity

that causes direct exposure of a leather

band to water.

●

The inside surface of the watch glass may

fog when the watch is exposed to a sudden

drop in temperature. No problem is

indicated if the fogging clears up relatively

quickly. Sudden and extreme temperature

changes (such as coming into an air

conditioned room in the summer and

standing close to an air conditioner outlet,

or leaving a heated room in the winter and

allowing your watch to come into contact

with snow) can cause it to take longer for

glass fogging to clear up. If glass fogging

does not clear up or if you notice moisture

inside of the glass, immediately stop using

your watch and take it to your original

retailer or to an authorized CASIO service

center.

●

Your water-resistant watch has been tested

in accordance with International

Organization for Standardization

regulations.

●

Band

●

Tightening the band too tightly can cause

you to sweat and make it difficult for air to

pass under the band, which can lead to skin

irritation. Do not fasten the band too tightly.

There should be enough room between the

band and your wrist so you can insert your

finger.

●

Deterioration, rust, and other conditions can

cause the band to break or come off of your

watch, which in turn can cause band pins to

fly out of position or to fall out. This creates

the risk of your watch falling from your wrist

and becoming lost, and also creates the risk

of personal injury. Always take good care of

your band and keep it clean.

●

Immediately stop using a band if you even

notice any of the following: loss of band

flexibility, band cracks, band discoloration,

band looseness, band connecting pin flying

or falling out, or any other abnormality. Take

your watch to your original retailer or to a

CASIO service center for inspection and

repair (for which you will be charged) or to

have the band replaced (for which you will

be charged).

Watch Operation Guide 5741

●

Temperature

●

Never leave your watch on the dashboard

of a car, near a heater, or in any other

location that is subject to very high

temperatures. Do not leave your watch

where it will be exposed to very low

temperatures. Temperature extremes can

cause your watch to lose or gain time, to

stop, or otherwise malfunction.

●

Leaving your watch in an area hotter than

+60 °C (140 °F) for long periods can lead to

problems with its LCD. The LCD may

become difficult to read at temperatures

lower than 0 °C (32 °F) and greater than

+40 °C (104 °F).

●

Impact

●

Your watch is designed to withstand impact

incurred during normal daily use and during

light activity such as playing catch, tennis,

etc. Dropping your watch or otherwise

subjecting it to strong impact, however, can

lead to malfunction. Note that watches with

shock-resistant designs (G‑SHOCK,

BABY‑G, G‑MS) can be worn while

operating a chain saw or engaging in other

activities that generate strong vibration, or

while engaging in strenuous sports

activities (motocross, etc.)

●

Magnetism

●

The hands of analog and combination

(analog-digital) watches are moved by a

motor that uses magnetic force. When such

a watch is close to a device (audio

speakers, magnetic necklace, cell phone,

etc.) that emits strong magnetism, the

magnetism can cause timekeeping to slow

down, speed up, or stop, resulting in the

incorrect time being displayed.

●

Timekeeping accuracy may be affected if

the watch itself becomes magnetized. Also,

very strong magnetism (from medical

equipment, etc.) should be avoided

because it can cause malfunction of your

watch and damage to electronic

components.

●

Electrostatic Charge

●

Exposure to very strong electrostatic

charge can cause your watch to display the

wrong time. Very strong electrostatic

charge even can damage electronic

components.

●

Electrostatic charge may cause temporary

blotching in blank areas of the LCD.

●

Chemicals

●

Do not allow your watch to come into

contact with thinner, gasoline, solvents,

oils, or fats, or with any cleaners, adhesives,

paints, medicines, or cosmetics that contain

such ingredients. Doing so can cause

discoloration of or damage to the resin

case, resin band, leather, and other parts.

●

Storage

●

If you do not plan to use your watch for a

long time, thoroughly wipe it free of all dirt,

sweat, and moisture, and store it in a cool,

dry place.

●

Resin Components

●

Allowing your watch to remain in contact

with other items or storing it together with

other items for long periods while it is wet

can cause color on resin components to

transfer to the other items, or the color of the

other items to transfer to the resin

components of your watch. Be sure to dry

off your watch thoroughly before storing it

and make sure it is not in contact with other

items.

●

Leaving your watch where it is exposed to

direct sunlight (ultraviolet rays) for long

periods or failure to clean dirt from your

watch for long periods can cause it to

become discolored.

●

Friction caused by certain conditions

(strong external force, sustained rubbing,

impact, etc.) can cause discoloration of

painted components.

●

If there are printed figures on the band,

strong rubbing of the printed area can cause

discoloration.

●

Leaving your watch wet for long periods can

cause fluorescent color to fade. Wipe the

watch dry as soon as possible after it

becomes wet.

●

Semi-transparent resin parts can become

discolored due to sweat and dirt, and if

exposed to high temperatures and humidity

for long periods.

●

Daily use and long-term storage of your

watch can lead to deterioration, breaking, or

bending of resin components. The extent of

such damage depends on usage conditions

and storage conditions.

●

Leather Band

●

Allowing your watch to remain in contact

with other items or storing it together with

other items for long periods while it is wet

can cause the color of the leather band to

transfer to the other items or the color of the

other items to transfer to the leather band.

Be sure to dry off your watch thoroughly with

a soft cloth before storing it and make sure

it is not in contact with other items.

●

Leaving a leather band where it is exposed

to direct sunlight (ultraviolet rays) for long

periods or failure to clean dirt from a leather

band for long periods can cause it to

become discolored.

CAUTION:

Exposing a leather band to rubbing or dirt

can cause color transfer and discoloration.

●

Metal Components

●

Failure to clean dirt from metal components

can lead to formation of rust, even if

components are stainless steel or plated. If

metal components exposed to sweat or

water, wipe thoroughly with a soft,

absorbent cloth and then place the watch in

a well-ventilated location to dry.

●

Use a soft toothbrush or similar tool to scrub

the metal with a weak solution of water and

a mild neutral detergent, or with soapy

water. Next, rinse with water to remove all

remaining detergent and then wipe dry with

a soft absorbent cloth. When washing metal

components, wrap the watch case with

kitchen plastic wrap so it does not come into

contact with the detergent or soap.

●

Bacteria and Odor Resistant Band

●

The bacteria and odor resistant band

protects against odor generated by the

formation of bacteria from sweat, which

ensures comfort and hygiene. In order to

ensure maximum bacteria and odor

resistance, keep the band clean. Use an

absorbent soft cloth to thoroughly wipe the

band clean of dirt, sweat, and moisture. A

bacteria and odor resistant band

suppresses the formation of organisms and

bacteria. It does not protect against rash

due to allergic reaction, etc.

Watch Operation Guide 5741

●

Liquid Crystal Display

●

Display figures may be difficult to read when

viewed from an angle.

●

Watch with Data Memory

●

Allowing the battery to go dead, replacing

the battery, or having your watch repaired

can cause all data in watch memory to be

lost. Note that CASIO Computer Co., Ltd.

assumes no responsibility for any damages

or losses caused by data lost due to

malfunction or repair of your watch,

replacement of the battery, etc. Be sure to

keep separate written copies of all

important data.

●

Watch Sensors

●

A watch sensor is a precision instrument.

Never try to take it apart. Never try to insert

any objects into the openings of a sensor,

and take care to ensure that dirt, dust, or

other foreign matter does not get into it.

After using your watch where it has been

immersed in saltwater, rinse it thoroughly

with fresh water.

Note that CASIO Computer Co., Ltd.

assumes no responsibility for any

damage or loss suffered by you or any

third party arising through the use of your

watch or its malfunction.

User Maintenance

●

Caring for Your Watch

Remember that you wear your watch next to

your skin, just like a piece of clothing. To

ensure your watch performs at the level for

which it is designed, keep it clean by

frequently wiping with a soft cloth to keep your

watch and band free of dirt, sweat, water and

other foreign matter.

●

Whenever your watch is exposed to sea

water or mud, rinse it off with clean fresh

water.

●

For a metal band or a resin band with metal

parts, use a soft toothbrush or similar tool to

scrub the band with a weak solution of water

and a mild neutral detergent, or with soapy

water. Next, rinse with water to remove all

remaining detergent and then wipe dry with

a soft absorbent cloth. When washing the

band, wrap the watch case with kitchen

plastic wrap so it does not come into contact

with the detergent or soap.

●

For a resin band, wash with water and then

wipe dry with a soft cloth. Note that

sometimes a smudge like pattern may

appear on the surface of a resin band. This

will not have any effect on your skin or

clothing. Wipe with a cloth to remove the

smudge pattern.

●

Clean water and sweat from a leather band

by wiping with a soft cloth.

●

Not operating a watch crown, buttons, or

rotary bezel could lead to later problems

with their operation. Periodically rotate the

crown and rotary bezel, and press buttons

to maintain proper operation.

●

Dangers of Poor Watch Care

Rust

●

Though the metal steel used for your watch

is highly rust-resistant, rust can form if your

watch is not cleaned after it becomes dirty.

ー　

Dirt on your watch can make it impossible

for oxygen to come into contact with the

metal, which can lead to breakdown of

the oxidization layer on the metal surface

and the formation of rust.

●

Rust can cause sharp areas on metal

components and can cause band pins to fly

out of position or to fall out. If you ever notice

any abnormality immediately stop using

your watch and take it to your original

retailer or to an authorized CASIO service

center.

●

Even if the surface of the metal appears

clean, sweat and rust in crevasses can soil

the sleeves of clothing, cause skin irritation,

and even interfere with watch performance.

Premature Wear

●

Leaving sweat or water on a resin band or

bezel, or storing your watch an area subject

to high moisture can lead to premature

wear, cuts, and breaks.

Skin Irritation

●

Individuals with sensitive skin or in poor

physical condition may experience skin

irritation when wearing a watch. Such

individuals should keep their leather band

or resin band particularly clean. Should you

ever experience a rash or other skin

irritation, immediately remove your watch

and contact a skin care professional.

Watch Operation Guide 5741

Battery

●

The special rechargeable battery used by

your watch is not intended to be removed or

replaced by you. Use of a rechargeable

battery other than the special one specified

for your watch can damage your watch.

●

The rechargeable (secondary) battery is

charged when the solar panel is exposed to

light, so it does not require regular

replacement as the primary battery

requires. Note, however, that long use or

operating conditions can cause the

capacity or charging efficiency of the

rechargeable battery to deteriorate. If you

feel that the amount of operation provided

by charging is too short, contact your

original retailer or CASIO service center.

Mobile Link Precautions

●

Legal Precautions

●

This watch complies with or has received

approval under the radio laws of various

countries and geographical areas. Using

this watch in an area where it does not

comply with or has not received approval

under applicable radio laws may be a

criminal offense. For details, visit the CASIO

Website.

https://world.casio.com/ce/BLE/

●

Use of this watch inside of aircraft is

restricted under the aviation laws of each

country. Be sure to follow the instructions of

airline personnel.

●

Precautions when using Mobile Link

●

When using this watch in combination with

a phone, keep the watch and phone close

to each other. A range of two meters is

recommended as a guideline, but the local

environment (walls, furniture, etc.), the

structure of a building, and other factors

may require a much closer range.

●

This watch can be affected by other devices

(electrical devices, audio-visual equipment,

office equipment, etc.) In particular, it can

be affected by operation of a microwave

oven. The watch may not be able to

communicate normally with a phone if a

microwave oven is operating nearby.

Conversely, this watch may cause noise in

radio reception and the video image of a TV.

●

Bluetooth of this watch uses the same

frequency band (2.4 GHz) as wireless LAN

devices, and use of such devices in close

proximity of this watch may result in radio

interference, slower communication

speeds and noise for the watch and the

wireless LAN device, or even

communication failure.

●

Stopping Radio Wave Emission by This

Watch

The watch is emitting radio waves whenever

the second hand is pointing to .

Also, the watch connects with a phone

automatically, as described below.

●

Auto Time Correction (4 times per day)

●

While Route Log is enabled (data

transferred each hour)

When in a hospital, on an aircraft, or in any

other area where the use of radio waves is not

allowed, use the operation below to stop radio

wave generation.

●

Stopping Radio Wave Generation

Press any button to terminate the Bluetooth

connection.

DisconnectedConnected

●

Disabling Auto Time Correction

Configure CASIO WATCHES phone app

settings to disable synchronization

between the watch and phone.

Using the Watch in a Medical Facility or

Aircraft

Watch Operation Guide 5741

Casio PRW-B1000

Product's Documents

User Manual

Specifications

Casio PRW-B1000 Questions and Answers