Casio PRW-6900ZE User Manual

Contents

Precautions

Operating Precautions

User Maintenance

Battery

Before Getting Started...

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

Time Adjustment

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

World Time

Checking World Time

Specifying a World Time City

Swapping Your Home Time and World Time

Alarm

Configuring Alarm Settings

Configuring the Hourly Time Signal Setting

Turning Off an Alarm or the Hourly Time Signal

Digital Compass

Taking a Compass Reading

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

Stopwatch

Measuring Elapsed Time

Measuring a Split Time

Timing the First and Second Place Finishers

Timer

Setting a Start Time

Using the Timer

Hand Alignment Adjustment

Adjusting Hand Alignment

Other Settings

Enabling the Button Operation Tone

Configuring Power Saving Function Settings

Other Information

City Table

Specifications

Troubleshooting

Watch Operation Guide 5673

MA2310-ED

OPUM-F

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 5673

●

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 can cause the display

to go blank momentarily or cause a rainbow

effect on the display.

●

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.

Watch Operation Guide 5673

●

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.

●

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.

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.

Watch Operation Guide 5673

Before Getting

Started...

This section provides an overview of the watch

and introduces convenient ways it can be

used.

●

Watch Features

●

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

You can display the current time in any one

of 29 cities around the globe, as well as for

UTC (Coordinated Universal Time).

●

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.

●

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 2-point calibration of the

Digital Compass to ensure better

accuracy.

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

⑤⑥

②①

⑦

③

A　Mode hand

B　Hour hand

C　Second hand

D　Minute hand

E　Day of the week

F　Month, day

G　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.

L button

Press to turn on illumination.

Watch Operation Guide 5673

Watch Face and Display

Indicators

⑪⑫ ⑭⑬⑮

⑩

⑨

①

②

③

④

⑤

⑥

⑦

⑧

A　In the Barometer Mode, the mode hand

points to [BARO].

B　In the Thermometer Mode, the mode hand

points to [TEMP].

C　In the Altitude Record Recall Mode, the

mode hand points to [REC].

D　In the Stopwatch Mode, the mode hand

points to [ST].

E　In the Receive Mode, the mode hand

points to [R/C].

F　In the World Time Mode, the mode hand

points to [WT].

G　In the Alarm Mode, the mode hand points

to [AL].

H　In the Timer Mode, the mode hand points

to [TR].

I　During 12-hour timekeeping, the second

hand points to [A] for a.m. times and [P] for

p.m. times

J　The second hand indicates altitude/

barometric pressure differential.

K　Displayed when an alarm is turned on.

L　Appears when the hourly time signal is on.

M　Displayed when the indicated time is

summer time.

N　Displayed while barometric pressure

change indication is enabled.

O　Shows the barometric pressure

measurement unit.

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

Stopwatch Mode

Timer Mode

Compass Mode

Use the buttons in the illustration above to

navigate between modes.

Watch Operation Guide 5673

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

●

Altimeter Mode

Use this mode to take an altitude reading for

your current location.

Altitude Measurement

③②

①

Remeasure

Display screen

navigation

A　Altitude differential/current time seconds

B　Altitude graph

C　Altitude

●

Compass Mode

Use this mode to take direction and bearing

angle readings.

Digital Compass

③②

①

Remeasure

Objective

A　North indication

B　Bearing at 12 o’clock

C　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

Display screen

navigation

A　Barometric pressure differential/current

time seconds

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

●

Stopwatch Mode

Use this mode to measure elapsed time.

Stopwatch

① ② ③

④

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

① ②

Start/Stop

Reset

A　Timer minutes

B　Timer seconds

Watch Operation Guide 5673

●

Alarm Mode

The watch will beep when an alarm time is

reached.

Alarm

②

③

①

②

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

You can view the current time in 29 cities and

UTC (Coordinated Universal Time) time.

World Time

①

②③

Show current city

A　City Codes (World Time Codes)

B　World Time City current time

C　Home City time

●

Receive Mode

With this mode, you can receive a time signal

manually.

Time Adjustment Using a Time Signal

①

A　Receive level indicator

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 a fast

forward operation is in progress, quickly

rotating the crown in succession again will

increase the speed even further.

●

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.

Shifting the Hands

Hand shift moves the hands out of the way for

easy viewing of display information.

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

This will shift the analog hands to allow

easy viewing of display information.

2. To return the hands to their normal

timekeeping positions, press (A), (B), (C),

or (D).

Note

●

If you leave the watch with its hands

shifted and do not perform any

operation for about ten seconds, the

hands resume normal timekeeping

automatically.

Watch Operation Guide 5673

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!

●

Depending on light intensity and local

conditions, the watch may become hot

to the touch when exposed to light for

charging. Take care to avoid burn

injury after charging. Also, avoid

charging the watch under high-

temperature conditions like the ones

described below.

ー　

On the dashboard of a vehicle

parked in the sun

ー　

Near an incandescent light bulb or

other source of heat

ー　

Under direct sunlight or in other hot

areas for long periods

●

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.

●

Checking the Charge Level

A display indicator shows the watch’s charge

level when you enter the Timekeeping Mode.

●

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.)

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.

●

Exposing the watch face to light after

the battery goes dead causes the

[CHARGE] indicator to appear. This

indicates charging has started.

Watch Operation Guide 5673

●

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

3 hours

Medium charge

High

charge

22 hours

High charge

Full charge

6 hours

●

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

Dead battery

Medium

charge

7 hours

Medium charge

High

charge

84 hours

High charge

Full charge

23 hours

●

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

Dead battery

Medium

charge

10 hours

Medium charge

High

charge

136 hours

High charge

Full charge

37 hours

●

Indoor fluorescent lighting (500 lux)

Dead battery

Medium

charge

119 hours

Medium charge

High

charge

High charge

Full charge

Note

●

Actual charging time depends on the

charging environment, watch settings,

and other factors.

●

Power Saving Function

Leaving the watch in a dark location for about

one hour between the hours of 10 p.m. and 6

a.m. will cause the display to go blank, and the

watch to enter Level 1 power saving. If the

watch is left in this condition for six or seven

days, the watch will enter 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.

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 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

Pressing (L) turns 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 Auto Light is enabled, face illumination will

turn 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 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 due to

operation of the auto light switch,

which determines the current

orientation of the watch. It does not

indicate malfunction.

Watch Operation Guide 5673

Note

●

Auto Light is disabled when any one of

the conditions below exists.

ー　

Alarm, timer alert, or other beeper

sounding

ー　

Hand movement operation is in

progress

ー　

Watch in the Compass Mode

ー　

While a time signal receive

operation is in progress

●

Configuring the Auto Light Setting

You can enable or disable Auto Light as

required.

1. Enter the Timekeeping Mode.

Navigating Between Modes

2. Pull out the crown.

This causes [CITY] to flash on the display

and the second hand to move to the

current Home City.

Crown

Home City

Second hand

3. Press (B) three times.

[ ] appears on the display with

[ON] or [OFF] flashing.

4. Rotate the crown to enable or disable the

Auto Light.

5. Push the crown back in to complete the

setting operation.

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. Pull out the crown.

This causes [CITY] to flash on the display

and the second hand to move to the

current Home City.

Crown

Home City

Second hand

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 to complete the

setting operation.

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.

Time Adjustment

Your watch can receive time calibration

signals and adjust its date and 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 area where you are using the

watch.

Setting a Home City

Note

●

Areas where time signal reception is

supported are limited. When you are

using the watch in an area where time

calibration signal reception is not

possible, adjust time and day settings

manually.

Using Watch Operations to Adjust

the Time Setting

Watch Operation Guide 5673

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

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 adjusted 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. Pull out the crown.

[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 to complete the

setting operation.

Watch Operation Guide 5673

Note

●

If you do not perform any operation for

about three minutes while performing

the Auto Receive on/off operation, 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.

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 adjusted 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 date

Last receive time

Signal Reception Precautions

●

When the watch is unable to adjust 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　

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 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 adjusted

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

●

As of January 2021, China does not

observe summer time. If China starts to

observe summer time in the future, the time

displayed by the watch for China may not be

correct.

Watch Operation Guide 5673

Using Watch Operations to

Adjust the Time Setting

If, for some reason, you cannot use time signal

reception to adjust the current time setting,

you can adjust date, time, and Home City

settings manually using watch button

operations.

●

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. Pull out the crown.

This causes [CITY] to flash on the display

and the second hand to move to the

current Home City.

Crown

Home City

Second hand

3. Rotate the crown to move the second

hand to the city code of the city you want

to set as your Home City.

●

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 to complete the

setting operation.

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

You can use the procedure below to adjust the

time and date settings when using the watch

where signal reception is not possible.

Important!

●

If you are using the watch in an area

where signal receive operations are

possible, time and date settings using

the time signal is recommended.

●

Configure the Home City setting before

changing the current time and date

settings.

Setting a Home City

1. Enter the Timekeeping Mode.

Navigating Between Modes

2. Pull out the crown.

This causes [CITY] to flash on the display

and the second hand to move to the

current Home City.

Crown

Home City

Second hand

3. Press (D).

This causes [HOUR-MIN] to flash on the

display.

●

You can see if a time is a.m. ([A]) or p.m.

([P]) by checking the second hand

position.

4. Rotate the crown to change the minute

setting.

Watch Operation Guide 5673

5. Press (B).

This causes [HOUR] to flash on the

display.

6. Rotate the crown to change the hour

setting.

7. Press (B).

This causes the current year setting to

flash on the display.

8. Rotate the crown to change the year

setting.

Crown

Ye a r

9. Press (B).

This causes the month and day to flash on

the display.

10. Rotate the crown to change the month and

day setting.

Crown

Month, day

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

push the crown back in to complete the

setting operation.

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. Pull out the crown.

This causes [CITY] to flash on the display

and the second hand to move to the

current Home City.

Crown

Home City

Second hand

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 to complete the

setting operation.

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.

World Time

You can view the current time in 29 cities and

UTC (Coordinated Universal Time) time.

Checking World Time

1. Enter the World Time Mode.

Navigating Between Modes

This displays [WT] for about one second.

Next, the hour and minute hands indicate

the current time in your World Time City.

At this time the second hand points to the

city code of your World Time City.

●

The digital display shows the current

time in your Home City.

●

To check whether the current time in

your World Time City is a.m. or p.m.,

press (A). This will cause the second

hand to move to [A] (a.m.) or [P] (p.m.).

After three seconds, the second hand

goes back to indicating the seconds.

●

To cause the second hand to move to

the currently selected city, press (D).

After three seconds, the second hand

goes back to indicating the seconds.

Home Time

City Codes (World Time Codes)

World Time

Watch Operation Guide 5673

Specifying a 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. Pull out the crown.

This causes [CITY] to flash on the display

and the second hand to move to the

current Home City.

Crown

Home City

Second hand

3. Rotate the crown to move the second

hand to the city code of the city you want

to specify as your World Time City.

This displays the current time in the city

you select.

4. Press (B).

This causes [ON] or [OFF] to flash on the

display.

5. Rotate the crown to select a summer time

setting.

●

[OFF]

The watch always indicates standard

time.

●

[ON]

The watch always indicates summer

time.

6. Push the crown back in to complete the

setting operation.

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 until [ ] flashes,

and your Home City time swaps places with

your World Time.

After swappingBefore swapping

World Time

Home Time

World TimeHome Time

Alarm

The watch will beep 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.

Configuring Alarm Settings

1. Enter the Alarm Mode.

Navigating Between Modes

2. Use (A) and (C) to display the number

([AL1] to [AL5]) of the alarm whose

settings you want to change.

Alarm number

Alarm time

3. Pull out the crown.

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.

Watch Operation Guide 5673

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 to complete the

setting operation.

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 10 seconds when

an alarm time is reached.

Configuring the Hourly Time

Signal Setting

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.

●

[SIG] (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 alarm

numbers ([AL1] to [AL5]) and the hourly

time signal ([SIG]) screens until the one

whose setting you want to change is

displayed.

Alarm number or hourly time signal

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 causes [ALM]

(alarm) to disappear from the display,

while disabling the hourly time signal

causes [SIG] (hourly time signal) to

disappear from the display.

Note

●

If [ALM] (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 [ALM] (alarm)

indicator is no longer displayed.

Watch Operation Guide 5673

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 operation can also be performed in

the Timekeeping Mode or Altimeter

Mode.

2. Point 12 o’clock of the watch in the

direction of your objective.

3. While keeping the watch horizontal, press

(C).

This displays [COMP] and starts digital

compass readings.

●

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).

●

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

(L) 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.

●

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.

Calibrating Compass

Readings

Calibrating Compass Readings

Perform 2-point calibration whenever you

notice the watch’s compass readings are

different 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

2-Point Calibration

1. Enter the Compass Mode.

Navigating Between Modes

2. Pull out the crown.

This displays [

1].

Crown

Watch Operation Guide 5673

3. 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].

4. Rotate the watch 180 degrees, taking care

to be as exact as possible.

5. Press (C).

●

This starts calibration of the second

point, which causes [

WAIT] to appear

on the display.

●

When calibration is successful, [OK]

appears on the display and the watch

returns to the Digital Compass screen.

6. Push the crown back in to complete the

calibration operation.

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.

●

[ERR] will appear if calibration fails for

some reason. If this happens, restart

the above procedure from step 2.

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. Pull out the crown.

This displays [

1].

Crown

3. Press (B).

This displays [DEC] and the current

magnetic declination setting.

4. 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

5. Push the crown back in to complete the

setting operation.

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 5673

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)

●

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

Altitude graph

●

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

●

When you enter the Altitude Mode, the

second hand indicates either

timekeeping seconds, or the

differential between altitude

measurements (whichever was

indicated the last time you were in the

Altitude Mode). You can toggle

between the two second hand

functions by pressing (D).

●

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 5673

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. Pull out the crown.

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 to complete the

setting operation.

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. Pull out the crown.

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 to complete the

setting operation.

Watch Operation Guide 5673

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 second hand (Altitude Differential

Indicator) will indicate the difference

between the reference altitude and the

current altitude reading. At this time the

second hand should indicate ±0 m (±0

feet).

Current location altitude

Altitude differential indicator

4. While comparing the difference between

the altitude you found on the map and the

altitude differential indicated by the

watch’s second hand, advance towards

your destination.

●

When the altitude differential you found

on the map is the same as that indicated

by the second hand, it means you are

close to your destination.

Example: Altitude differential of -30 m (-98

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

100 50

−50

−100

Altitude differential

indicator

Unit: m

Range: ±100 m (1000 m)

(±328 feet (3280 feet))

Note

●

You can toggle between the two

second hand functions by pressing

(D).

Checking the Current Altitude

●

The second hand points to

(over) if

the current altitude differential is

greater than the setting value, or

(under) if it is lower than the setting

value.

If either of these is indicated while

using the ±100 m (328 feet)

measurement range, change the

range setting to ±1000 m (3280 feet).

●

The second hand will move to 9 o’clock

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. Pull out the crown.

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 to complete the

setting operation.

Watch Operation Guide 5673

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.

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] stops flashing 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.

●

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.

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 Altimeter Mode.

Navigating Between Modes

2. Pull out the crown.

This displays the current altitude and

enters the Altitude Offset Mode.

Crown

3. Press (B) three 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 to complete the

setting operation.

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 5673

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

Barometric pressure graph

●

To retrigger measurement, press (A).

●

To return to the Timekeeping Mode,

hold down (B) for at least two seconds.

Note

●

When you enter the Barometer Mode,

the second hand indicates either

timekeeping seconds, or the

differential between barometer

measurements (whichever was

indicated the last time you were in the

Barometer Mode).

You can toggle between the two

second hand functions by pressing

(D).

●

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 5673

Checking Changes in

Barometric Pressure Over

Time

The watch displays a graph of 20 hours of

barometric pressure readings taken every two

hours. The square (

) at the far right of the

graph indicates the latest barometric pressure

reading.

Barometric pressure

(1 hPa per division)

Time

(2 hours per division)

●

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 second hand indicates

the difference between the current barometric

pressure measurement and the last auto

measurement value (taken at two-hour

intervals).

1. Enter the Barometer Mode.

Navigating Between Modes

2. Press (D).

The second hand indicates the

barometric pressure differential (Pressure

Differential Indicator).

Example: Barometric pressure differential

of -3 hPa (approximately -0.09 inHg)

10 5

−5

−10

Pressure

Differential Indicator

Range: ±10 hPa

(1 hPa units)

Unit: hPa

Note

●

You can toggle between the two

second hand functions by pressing

(D).

Checking the Current Barometric

Pressure

●

The second 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 that is 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 second hand to move to 9 o’clock.

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

indicator:

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 indicator 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.

Watch Operation Guide 5673

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. Pull out the crown.

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 to complete the

setting operation.

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 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 Barometer Mode.

Navigating Between Modes

2. Pull out the crown.

This displays the current barometric

pressure.

Crown

3. Press (B).

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 to complete the

setting operation.

Watch Operation Guide 5673

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

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

●

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.

Watch Operation Guide 5673

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. Pull out the crown.

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 to complete the

setting operation.

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 Thermometer Mode.

Navigating Between Modes

2. Pull out the crown.

This displays the current temperature.

Crown

3. Press (B).

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 to complete the

setting operation.

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.

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.

Watch Operation Guide 5673

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

Total Descent

Total Ascent Low Altitude

High Altitude

Auto Recorded 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

●

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

1 second

Date when

accumulation started.

Data type

Cumulative altitude

2 seconds

Watch Operation Guide 5673

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 the (D) for at least two

seconds. Release the button as soon as

[CLEAR] stops flashing.

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] stops flashing. This indicates

that all data was deleted.

Stopwatch

The Stopwatch Mode lets you measure

elapsed time up to 24 hours in 1/100 of a

second units.

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 5673

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.

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. Pull out the crown.

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 to complete the

setting operation.

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 will sound 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.

Adjusting Hand Alignment

1. Enter the Timekeeping Mode.

Navigating Between Modes

2. Pull out the crown.

This causes [CITY] to flash on the display

and the second hand to move to the

current Home City.

Crown

Home City

Second hand

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

Release the button when [HAND ADJ]

starts to flash.

This indicates that hand alignment

adjustment has started.

●

[HAND SET] will flash first on the

display about 0.5 seconds after you

hold down the (A) button. Keep the

button depressed until [HAND ADJ]

flashes on the display.

After five seconds

After 0.5 seconds

4. After all the hands move to 12 o’clock,

push the crown back in.

This returns the hands to normal

timekeeping.

Watch Operation Guide 5673

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 in the

Timekeeping Mode by the hands and

on the display. If the hands are

misaligned, perform steps 2 through 4

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. Pull out the crown.

This causes [CITY] to flash on the display

and the second hand to move to the

current Home City.

Crown

Home City

Second hand

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 to complete the

setting operation.

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 will still

sound even while the operation tone is

muted.

Watch Operation Guide 5673

Configuring Power Saving

Function Settings

1. Enter the Timekeeping Mode.

Navigating Between Modes

2. Pull out the crown.

This causes [CITY] to flash on the display

and the second hand to move to the

current Home City.

Crown

Home City

Second hand

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 to complete the

setting operation.

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

Other Information

This section provides non-operational

information you also need to know. Refer to

this information as required.

City Table

City

code

City Name

Time

Zone

UTC

Coordinated Universal

Time

LON* London

PAR* Paris +1

ATH* Athens +2

JED Jeddah +3

THR Tehran +3.5

DXB Dubai +4

KBL Kabul +4.5

KHI Karachi +5

DEL Delhi +5.5

KTM Kathmandu +5.75

DAC Dhaka +6

RGN Yangon +6.5

BKK Bangkok +7

HKG* Hong Kong +8

TYO* Tokyo +9

ADL Adelaide +9.5

SYD Sydney +10

NOU Noumea +11

WLG Wellington +12

PPG Pago Pago -11

HNL* Honolulu -10

ANC* Anchorage -9

LAX* Los Angeles -8

DEN* Denver -7

CHI* Chicago -6

NYC* New York -5

YHZ Halifax -4

RIO Rio de Janeiro -3

RAI Praia -1

* Cities where time calibration signal

reception is possible.

●

The information in the above table is current

as of January 2021.

●

Time zones may change and UTC

differentials may become different from

those shown in the table above.

Specifications

Accuracy :

±15 seconds per month average when time

adjustment using signal reception 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°

Continuous Bearing Measurement (1

minute)

North Indication Hand

Compass calibration (2-point calibration,

magnetic declination angle)

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 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

Watch Operation Guide 5673

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)

Barometric pressure adjustment

Barometric pressure graph

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)

Temperature Correction

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))

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 :

Time alarms

Number of alarms: 5

Setting units: Hours, minutes

Alarm tone duration: 10 seconds

Hourly time signal: Beep every hour on the

hour

World Time :

Current time in 29 cities (29 time zones),

and UTC (Coordinated Universal Time)

time

Summer time

City swapping

One-touch UTC display

Other :

Double LED light: LED light for dial and LED

backlight for LCD (with Full Auto Light,

Super Illuminator, afterglow, afterglow

duration setting (1.5 seconds, 3 seconds));

alarm testing; automatic hand position

correction; power saving; charge level

(battery) indicator; operation tone enable/

disable; hand shift

Power Supply :

Solar panel and one rechargeable battery

Battery operating time: Approximately 6

months

Conditions:

Illumination: 1.5 seconds/day

Beeper: 10 seconds/day

Digital Compass Operations: 20 times/

month

Mountain climbing: Once/month

(Altitude readings: Approximately 1

hour; Barometric pressure change

indication measurements:

Approximately 24 hours)

Barometric Pressure Graph:

Measurement every 2 hours

Time signal reception: 4 minutes/day

Display: 18 hours/day

Specifications are subject to change without

notice.

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.

Watch Operation Guide 5673

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

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 second hand points to 9

o’clock.

The second hand will move to 9 o’clock if a

reading is outside the allowable altitude

measurement range (-700 m to 10,000 m

(-2,300 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 2-

point 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 following 2-point

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 2-point

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 5673

Barometric Pressure

Measurement

Following a relative barometric

pressure reading, the watch’s

second hand points to 9 o’clock.

The second hand will move to 9 o’clock if a

reading is outside the allowable barometric

pressure measurement range (260 hPa to

1,100 hPa (7.65 inHg to 32.45 inHg)). If [ERR]

appears on the display, 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.

Specifying a World Time City

Alarm

The 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.

Is the alarm enabled?

Enable the alarm.

Configuring Alarm Settings

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

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.

Hand Alignment Adjustment

Crown Operations

Nothing happens when I rotate the

crown.

If you do not perform any operation for about

two minutes after pulling out the crown

(approximately 30 minutes in the case of hand

and day indicator alignment), crown

operations will automatically become

disabled. Push the crown back in to its normal

position and then pull it out again to re-enable

crown operations.

Using the Crown

Watch Operation Guide 5673

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 will recover

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.

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

Watch Operation Guide 5673

Casio PRW-6900ZE

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User Manual

Specifications

Casio PRW-6900ZE Questions and Answers