Casio GM-B2100BPC User Manual

Contents

Precautions

Operating Precautions

User Maintenance

Battery

Mobile Link Precautions

Before Getting Started...

General Guide

Watch Face and Display Indicators

Navigating Between Modes

Cycling Between Timekeeping Mode Digital

Display Contents

Shifting Hands to Read the Digital Display

Charging

Viewing the Face in the Dark

Useful Features

Linking with a Phone

Getting Ready

Auto Time Adjustment

Configuring Reminder Settings

Configuring World Time Settings

Adjusting Hand Alignment

Phone Finder

Configuring Watch Settings

Changing the Home City Summer Time Setting

Checking the Watch Charge Level

Recording Your Current Location (TIME &

PLACE)

Connection

Connecting with a Phone

Disconnecting from Your Phone

Unpairing

If you purchase another phone

Time Adjustment

Using Watch Operations to Adjust the Time

Setting

Using the Watch in a Medical Facility or

Aircraft

World Time

Using CASIO WATCHES to Configure World

Time City Settings

Checking World Time

World Time City Setting

Swapping Your Home Time and World Time

Alarm

Using CASIO WATCHES to Configure Alarm

Settings

Configuring Alarm Settings

Enabling the Hourly Time Signal

Turning Off an Alarm or the Hourly Time Signal

Moving to Another Time Zone

Stopwatch

Split Times and Lap Times

Measuring Elapsed Time

Measuring a Split Time

Measuring Lap Times

Timer

Using CASIO WATCHES to Configure Timer

Settings

Setting the Countdown Start Time

Using the Timer

Reminder

Creating a Reminder

Checking Reminder Details

Hand Alignment Adjustment

Using CASIO WATCHES to Adjust Hand

Alignment

Adjusting Hand Alignment

Other Settings

Changing the Date Display Format

Specifying the Day of the Week Language

Enabling the Button Operation Tone

Configuring Power Saving Function Settings

Resetting Watch Settings

Other Information

City Table

Summer Time Table

Supported Phones

Specifications

Copyrights and Registered Copyrights

Troubleshooting

Watch Operation Guide 5691

MA2207-EA

OPUM-G

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 5691

●

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.

●

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 5691

●

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.

Note that CASIO Computer Co., Ltd.

assumes no responsibility for any

damage or loss suffered by you or any

third party arising through the use of your

watch or its malfunction.

User Maintenance

●

Caring for Your Watch

Remember that you wear your watch next to

your skin, just like a piece of clothing. To

ensure your watch performs at the level for

which it is designed, keep it clean by

frequently wiping with a soft cloth to keep your

watch and band free of dirt, sweat, water and

other foreign matter.

●

Whenever your watch is exposed to sea

water or mud, rinse it off with clean fresh

water.

●

For a metal band or a resin band with metal

parts, use a soft toothbrush or similar tool to

scrub the band with a weak solution of water

and a mild neutral detergent, or with soapy

water. Next, rinse with water to remove all

remaining detergent and then wipe dry with

a soft absorbent cloth. When washing the

band, wrap the watch case with kitchen

plastic wrap so it does not come into contact

with the detergent or soap.

●

For a resin band, wash with water and then

wipe dry with a soft cloth. Note that

sometimes a smudge like pattern may

appear on the surface of a resin band. This

will not have any effect on your skin or

clothing. Wipe with a cloth to remove the

smudge pattern.

●

Clean water and sweat from a leather band

by wiping with a soft cloth.

●

Not operating a watch crown, buttons, or

rotary bezel could lead to later problems

with their operation. Periodically rotate the

crown and rotary bezel, and press buttons

to maintain proper operation.

●

Dangers of Poor Watch Care

Rust

●

Though the metal steel used for your watch

is highly rust-resistant, rust can form if your

watch is not cleaned after it becomes dirty.

ー　

Dirt on your watch can make it impossible

for oxygen to come into contact with the

metal, which can lead to breakdown of

the oxidization layer on the metal surface

and the formation of rust.

●

Rust can cause sharp areas on metal

components and can cause band pins to fly

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

any abnormality immediately stop using

your watch and take it to your original

retailer or to an authorized CASIO service

center.

●

Even if the surface of the metal appears

clean, sweat and rust in crevasses can soil

the sleeves of clothing, cause skin irritation,

and even interfere with watch performance.

Premature Wear

●

Leaving sweat or water on a resin band or

bezel, or storing your watch an area subject

to high moisture can lead to premature

wear, cuts, and breaks.

Skin Irritation

●

Individuals with sensitive skin or in poor

physical condition may experience skin

irritation when wearing a watch. Such

individuals should keep their leather band

or resin band particularly clean. Should you

ever experience a rash or other skin

irritation, immediately remove your watch

and contact a skin care professional.

Watch Operation Guide 5691

Battery

●

The special rechargeable battery used by

your watch is not intended to be removed or

replaced by you. Use of a rechargeable

battery other than the special one specified

for your watch can damage your watch.

●

The rechargeable (secondary) battery is

charged when the solar panel is exposed to

light, so it does not require regular

replacement as the primary battery

requires. Note, however, that long use or

operating conditions can cause the

capacity or charging efficiency of the

rechargeable battery to deteriorate. If you

feel that the amount of operation provided

by charging is too short, contact your

original retailer or CASIO service center.

Mobile Link Precautions

●

Legal Precautions

●

This watch complies with or has received

approval under the radio laws of various

countries and geographical areas. Using

this watch in an area where it does not

comply with or has not received approval

under applicable radio laws may be a

criminal offense. For details, visit the CASIO

Website.

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

●

Use of this watch inside of aircraft is

restricted under the aviation laws of each

country. Be sure to follow the instructions of

airline personnel.

●

Precautions when using Mobile Link

●

When using this watch in combination with

a phone, keep the watch and phone close

to each other. A range of two meters is

recommended as a guideline, but the local

environment (walls, furniture, etc.), the

structure of a building, and other factors

may require a much closer range.

●

This watch can be affected by other devices

(electrical devices, audio-visual equipment,

office equipment, etc.) In particular, it can

be affected by operation of a microwave

oven. The watch may not be able to

communicate normally with a phone if a

microwave oven is operating nearby.

Conversely, this watch may cause noise in

radio reception and the video image of a TV.

●

Bluetooth of this watch uses the same

frequency band (2.4 GHz) as wireless LAN

devices, and use of such devices in close

proximity of this watch may result in radio

interference, slower communication

speeds and noise for the watch and the

wireless LAN device, or even

communication failure.

●

Stopping Radio Wave Emission by This

Watch

The watch is emitting radio waves whenever

the mode hand is pointing to

In addition, the watch also connects phone

automatically four times a day to adjust its time

setting.

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

other area where the use of radio waves is not

allowed, use the operation below to stop radio

wave generation.

●

Stopping Radio Wave Generation

Press any button to terminate the Bluetooth

connection.

DisconnectedConnected

●

Disabling Auto Time Adjustment

Configure CASIO WATCHES settings to

disable time adjustment between the watch

and phone.

Using the Watch in a Medical Facility or

Aircraft

Watch Operation Guide 5691

Before Getting

Started...

This section provides an overview of the watch

and introduces convenient ways it can be

used.

Watch Features

●

Phone Linking

The watch supports connection and

communication with a Bluetooth capable

phone.

●

World Time

Display the current time in any one of 38

time zones* around the globe.

* Subject to being updated when

connected with a phone.

●

Alarm

An alarm sounds whenever a time specified

by you is reached.

●

Stopwatch

The stopwatch measures elapsed time in

units of 1/100 second for the first hour, and

in one-second units thereafter, for up to 24

hours.

●

Timer

Countdown from a start time specified by

you. An alarm sounds when the countdown

reaches zero.

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

①②

③④

A　Hour hand

B　Minute hand

C　Mode hand

Indicates the current mode.

In the Timekeeping Mode, this hand

shows the current charge level.

D　LCD

A button

Pressing this button in the Timekeeping Mode

cycles between displays.

B button

Press to turn on illumination.

C button

Each press cycles between watch modes.

In any mode, hold down this button for at least

one second to return to the Timekeeping

Mode.

D button

Pressing this button while any setting screen

is displayed will change the setting.

Watch Face and Display

Indicators

⑪⑬⑫

⑨

④

①

⑤

②

⑥

⑦

③

⑩

⑧

A　In the Stopwatch Mode, the mode hand

points to [ST].

B　In the Alarm Mode, the mode hand points

to [AL].

C　Displayed while the watch is indicating

summer time.

D　In the World Time Mode, the mode hand

points to [WT].

E　In the Timer Mode, the mode hand points

to [TR].

F　The mode hand points to

while the watch

is connected with a phone.

G　Battery level

In the Timekeeping Mode, the current

charge level is indicated by the mode

hand.

H　Displayed while the hourly time signal is

enabled.

I　Displayed while an alarm is turned on.

J　Displayed during p.m. times while 12-hour

timekeeping is being used.

K　Displayed when the watch successfully

connects with a phone and adjusts its time

setting.

L　Displayed while there is an anniversary

and/or appointment reminder created

using the “CASIO WATCHES” app. This

indicator flashes on the day of an

anniversary or appointment.

M　Flashes while the watch’s hands are

shifted for easier reading.

Watch Operation Guide 5691

Navigating Between Modes

Each press of (C) cycles between watch

modes.

●

In any mode, hold down (C) for at least one

second to return to the Timekeeping Mode.

Alarm Mode

Timer Mode Stopwatch Mode

World Time Mode

Timekeeping Mode

Mode hand

●

Connecting with a Phone

Hold down (C) for at least three seconds to

connect with a phone.

●

To disconnect, press any button.

Any button

After connectionBefore connection

Cycling Between

Timekeeping Mode Digital

Display Contents

Each press of (A) in the Timekeeping Mode

toggles between the display information as

shown below.

●

When the watch is not paired with a

phone

Month, day

Day of week

Seconds

Hours, minutes

Seconds

●

When the watch is paired with a phone

Month, day

Day of week

Seconds

Hours, minutes

Seconds

Reminders

Shifting Hands to Read the

Digital Display

Hand shift moves the hands out of the way for

easy viewing of display information.

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

●

This will shift the analog hands to allow

easy viewing of display information.

2. To return the hands to their normal

timekeeping positions, hold down (B) as

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

change to another mode.

Note

●

If you leave the watch with its hands

shifted and do not perform any

operation for about one hour, the

hands will resume normal timekeeping

automatically.

Charging

This watch runs on power supplied from a

rechargeable (secondary) battery that is

charged by a solar panel. The solar panel is

integrated into the face of the watch, and

power is generated whenever the face is

exposed to light.

●

Charging the Watch

When you are not wearing the watch, put it in

a location where it is exposed to bright light.

While you are wearing the watch, make sure

that its face (solar panel) is not blocked from

light by the sleeve of your clothing. Power

generation efficiency is reduced even when

the face of the watch is blocked only partially.

NOYES

Watch Operation Guide 5691

Important!

●

Some light sources and environments

can cause the watch to become

extremely hot during charging, which

creates the risk of burn injury and

damage to internal watch

components.

Avoid charging the watch under

conditions like the ones described

below, where the temperatures may

exceed 60 °C (140 °F).

ー　

On the dashboard of a vehicle

parked in the sun

ー　

Near incandescent lamps, camera

lights, halogen lamps, or other

sources of heat

ー　

In locations exposed to direct

sunlight for long periods and other

hot locations

●

Checking the Charge Level

In the Timekeeping Mode, the current charge

level is indicated by the mode hand.

①

②

③

A　Good (high charge)

B　Good (medium charge)

C　Low Battery

●

Low Battery

A low battery will cause [LOW] to flash and will

disable the functions below.

●

Illumination

●

Sounds (alarm, etc.)

●

Connection with a phone

If the charge level drops even further, [CHG]

will flash and the hour and minute hands will

stop at 12 o’clock. If this happens, all functions

are disabled.

●

Dead Battery

The digital display will go blank if the battery

goes dead. 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.

●

Exposing the watch to light while its

battery is dead will cause [CHG] to

start flashing. Expose the watch to light

to charge it until the Timekeeping

Mode screen re-appears.

Note

●

If [R] is flashing, it means that all

functions, except for timekeeping, are

disabled due to high momentary

battery power consumption.

Hands are stopped and buttons do

not work.

●

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

Times Required to Achieve Next Charge

Level

●

Sunny day, outdoors (50,000 lux)

Dead battery

Medium

charge

3 hours

Medium charge

High

charge

24 hours

High charge

Full charge

7 hours

●

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

Dead battery

Medium

charge

7 hours

Medium charge

High

charge

92 hours

High charge

Full charge

25 hours

●

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

Dead battery

Medium

charge

11 hours

Medium charge

High

charge

149 hours

High charge

Full charge

40 hours

●

Indoor fluorescent lighting (500 lux)

Dead battery

Medium

charge

148 hours

Medium charge

High

charge

High charge

Full charge

Note

●

Actual charging time depends on the

local charging environment.

Watch Operation Guide 5691

●

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 :

Digital display goes blank to save power. The

watch can connect with a phone at this level.

Power Saving Level 2 :

All hands stop and the digital display goes

blank to save power. All functions are

disabled.

Recovering from Power Saving Operation

Use one of the operations below to exit power

saving.

●

Press any button.

●

Move the watch to a bright location.

Note

●

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 watch has an LED light that you can turn

on for reading in the dark.

●

Turning On Illumination

Press (B) to illuminate the face and digital

display.

●

Illumination will turn off automatically if an

alarm starts to sound.

●

Illumination is disabled while the hands are

moving at high speed.

●

The light may flicker when it turns on or off.

●

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. Hold down (A) for at least two seconds

until the name of the currently selected

Home City is displayed.

●

This is the setting mode. The hands

automatically shift out of the way for

easy viewing of the display and other

indicators.

Home City

3. Press (C) 12 times to display [LIGHT].

4. Press (D) to select an illumination

duration.

[LT1]: 1.5-second light

[LT3]: 3-second light

5. Press (A) to exit the setting screen.

Note

●

While the setting is being configured,

the watch will exit the setting operation

automatically after about two or three

minutes of non-operation.

Useful Features

Pairing the watch with your phone makes a

number of the watch’s features easier to use.

Auto time adjustment

Auto Time Adjustment

12:30

Selection of More Than 300 World Time

cities

Configuring World Time Settings

Recording of Anniversaries and

Appointments

Configuring Reminder Settings

In addition, a number of other watch settings

can be configured using your phone.

To transfer data to a watch and to

configure settings, you first need to pair

the watch with your phone.

Getting Ready

●

Your phone needs to have the CASIO

“CASIO WATCHES” app installed to pair

with the watch.

Watch Operation Guide 5691

Linking with a Phone

While there is a Bluetooth connection

between the watch and phone (Mobile Link),

the watch’s current time setting is adjusted

automatically. You can also change the

watch’s other settings.

Note

●

This function is available only while

CASIO WATCHES is running on the

phone.

●

This section describes watch and

phone operations.

: Watch operation

: Phone operation

Getting Ready

To use your watch in combination with a

phone, you first need to pair them. Perform the

steps below to pair the watch with a phone.

●

Install the app on your phone.

In Google Play or the App Store, search for the

CASIO “CASIO WATCHES” app and install it

on your phone.

●

Configure Bluetooth settings.

Enable the phone’s Bluetooth.

Note

●

For details about setting procedures,

see your phone documentation.

●

Pair the watch with a phone.

Before you can use the watch in combination

with a phone, you first need to pair them.

1. Move the phone to be paired with close to

(within one meter of) the watch.

Tap the “CASIO WATCHES” icon.

●

Tap on the “My Watch” tab. Next,

select the applicable product name.

Hold down (C) for at least three seconds

until [CNCT] starts to flash. Release the

button when the mode hand moves to

Perform the operation shown on the

screen of the phone to be paired with.

When a connection is established

between the watch and phone, [CNCT]

will stop flashing.

●

If pairing fails for some reason, [ERR]

will appear on the display momentarily

and then the watch will return to the

Timekeeping Mode. Perform the pairing

procedure again from the beginning.

Pairing complete.Pairing started.

Note

●

The first time you start up CASIO

WATCHES, a message will appear on

your phone asking if you want to

enable location information

acquisition. Configure settings to allow

background use of location

information.

Auto Time Adjustment

Your watch will connect with a phone at preset

times each day and adjust its time settings

automatically.

●

Using This Function

Your watch adjusts its time setting four times

a day according to a preset schedule. If you

leave your watch in the Timekeeping Mode, it

will perform the adjustment operation

automatically as you go about your daily life,

without any operation required by you.

12:30

Important!

●

The watch may not be able to perform

auto time adjustment under the

conditions described below.

ー　

While the watch is too far away from

its paired phone

ー　

While communication is not possible

due to radio interference, etc.

ー　

While the phone is updating its

system

ー　

While CASIO WATCHES is not

running on the phone

Watch Operation Guide 5691

Note

●

If the watch does not indicate the

correct time even if is able to connect

with a phone, adjust the hand

positions.

Adjusting Hand Alignment

●

If there is a World Time City specified

with CASIO WATCHES, its time will

also be adjusted automatically.

●

The watch will connect with the phone

and perform auto time adjustment at

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

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

automatically terminated after auto

time adjustment is complete.

●

Triggering Immediate Time Adjustment

The watch’s time setting will be adjusted

automatically whenever you establish a

connection between the watch and a phone.

Whenever you want to trigger immediate time

adjustment, perform the procedure below to

connect with a phone.

Enter the Timekeeping Mode.

Navigating Between Modes

2. Move the phone close to (within one meter

of) the watch.

Press (D).

[TIME] flashes to indicate that the watch

has started the connection operation.

Once the watch and phone are

connected, [OK] will appear, and then the

watch will adjust its time setting based on

information from the phone.

●

At this time your current location is

recorded by your phone.

After time

adjustment

Trying to connect

Note

●

The connection is terminated

automatically after time adjustment is

complete.

●

If time adjustment fails for some

reason, [ERR] will appear.

●

[RCVD] flashes when the receive

operation starts, and [RCVD] appears

after it is complete.

Configuring Reminder

Settings

After you use CASIO WATCHES to create

reminders, appointments, anniversaries, or

other events you need to remember, you can

check them on the watch.

●

You can have up to five reminders

registered.

Tap the “CASIO WATCHES” icon.

Hold down (C) for at least three seconds

until [CNCT] starts to flash. Release the

button when the mode hand moves to

When a connection is established

between the watch and phone, [CNCT]

will stop flashing.

●

If connection fails for some reason,

[ERR] will appear on the display

momentarily and then the watch will

return to the Timekeeping Mode.

ConnectedTrying to connect

Follow the instructions that appear on

the screen to configure reminder settings.

●

You can input up to 18 alphanumeric

characters as a reminder title.

Note

●

To prevent the appointments from

being displayed on the watch, use

CASIO WATCHES to turn off the

reminder setting.

Configuring World Time

Settings

Specifying a World Time City with CASIO

WATCHES causes the watch’s World Time

City to change accordingly. Settings can be

configured to perform auto summer time

switching for the World Time City.

Note

●

CASIO WATCHES World Time lets

you select from among approximately

300 cities as the World Time City.

●

You can use CASIO WATCHES to

configure settings for user cities that

are not included in the watch’s built-in

World Time Cities. You must use

CASIO WATCHES to select a user city

as your World Time City.

●

Selecting a World Time City

Tap the “CASIO WATCHES” icon.

Hold down (C) for at least three seconds

until [CNCT] starts to flash. Release the

button when the mode hand moves to

When a connection is established

between the watch and phone, [CNCT]

will stop flashing.

●

If connection fails for some reason,

[ERR] will appear on the display

momentarily and then the watch will

return to the Timekeeping Mode.

ConnectedTrying to connect

Perform the operation shown on the

phone screen. The World Time setting will

be reflected on the watch.

Watch Operation Guide 5691

●

Configuring the Summer Time Setting

Tap the “CASIO WATCHES” icon.

Hold down (C) for at least three seconds

until [CNCT] starts to flash. Release the

button when the mode hand moves to

When a connection is established

between the watch and phone, [CNCT]

will stop flashing.

●

If connection fails for some reason,

[ERR] will appear on the display

momentarily and then the watch will

return to the Timekeeping Mode.

ConnectedTrying to connect

Perform the operation shown on the

phone screen to select a summer time

setting.

●

“Auto”

The watch switches between standard

time and summer time automatically.

●

“OFF”

The watch always indicates standard

time.

●

“ON”

The watch always indicates summer

time.

Note

●

While the summer time setting is

“Auto”, the watch will switch between

standard time and summer time

automatically. You do not need to

switch between standard time and

summer time manually. Even if you are

in an area that does not observe

summer time, you can leave the

watch’s summer time setting as “Auto”.

●

For information about summer time

periods, refer to the “Summer Time

Table” or CASIO WATCHES.

●

Swapping Your World Time and Home

Time

Tap the “CASIO WATCHES” icon.

Hold down (C) for at least three seconds

until [CNCT] starts to flash. Release the

button when the mode hand moves to

When a connection is established

between the watch and phone, [CNCT]

will stop flashing.

●

If connection fails for some reason,

[ERR] will appear on the display

momentarily and then the watch will

return to the Timekeeping Mode.

ConnectedTrying to connect

Perform the operation shown on the

phone screen to swap your Home Time

with your World Time.

Note

●

Auto time adjustment does not work for

24 hours after swapping of the Home

Time and World Time.

Adjusting Hand Alignment

If the hands are out of alignment even though

auto time adjustment is being performed, use

CASIO WATCHES to adjust them.

Tap the “CASIO WATCHES” icon.

Hold down (C) for at least three seconds

until [CNCT] starts to flash. Release the

button when the mode hand moves to

When a connection is established

between the watch and phone, [CNCT]

will stop flashing.

●

If connection fails for some reason,

[ERR] will appear on the display

momentarily and then the watch will

return to the Timekeeping Mode.

ConnectedTrying to connect

Perform the operation shown on the

phone screen to correct hand alignment.

Phone Finder

You can use phone finder to trigger a tone on

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

forced to sound even if the phone is in vibrate

mode.

Important!

●

Do not use this function in areas where

phone call tones are restricted.

●

The tone sounds at a high volume. Do

not use this function when listening to

phone output over earphones.

If the watch is connected with a phone,

press any button to terminate the

connection.

DisconnectedConnected

Watch Operation Guide 5691

If the watch is in any mode besides the

Timekeeping Mode, hold down (C) for at

least one second to enter the

Timekeeping Mode.

Hold down (D) for at least three

seconds. Release the button when [FIND]

starts to flash at low speed.

The phone will sound a tone when it

establishes a connection with the watch.

●

It will take a few seconds before the

phone tone sounds.

Sounding phone

alert sound

Getting ready to

connect with phone

Press any button to stop the tone.

●

You can press any watch button to stop

the phone tone only during the first 30

seconds after it starts to sound.

Configuring Watch Settings

Alarm time, timer start time, and other settings

can also be configured using CASIO

WATCHES.

Tap the “CASIO WATCHES” icon.

Hold down (C) for at least three seconds

until [CNCT] starts to flash. Release the

button when the mode hand moves to

When a connection is established

between the watch and phone, [CNCT]

will stop flashing.

●

If connection fails for some reason,

[ERR] will appear on the display

momentarily and then the watch will

return to the Timekeeping Mode.

ConnectedTrying to connect

Select the setting you want to change

and then perform the operation shown on

the phone screen.

Changing the Home City

Summer Time Setting

Tap the “CASIO WATCHES” icon.

Hold down (C) for at least three seconds

until [CNCT] starts to flash. Release the

button when the mode hand moves to

When a connection is established

between the watch and phone, [CNCT]

will stop flashing.

●

If connection fails for some reason,

[ERR] will appear on the display

momentarily and then the watch will

return to the Timekeeping Mode.

ConnectedTrying to connect

Perform the operation shown on the

phone screen to change your Home City

summer time setting.

Checking the Watch Charge

Level

Use the procedure below to check the current

charge level with CASIO WATCHES.

Tap the “CASIO WATCHES” icon.

Hold down (C) for at least three seconds

until [CNCT] starts to flash. Release the

button when the mode hand moves to

When a connection is established

between the watch and phone, [CNCT]

will stop flashing.

●

If connection fails for some reason,

[ERR] will appear on the display

momentarily and then the watch will

return to the Timekeeping Mode.

ConnectedTrying to connect

Use CASIO WATCHES to check the

charge level.

Recording Your Current

Location (TIME & PLACE)

While traveling or otherwise on the go, you can

use the procedure below to record your

current location, along with the time and date,

on your phone. Recorded location information

can be viewed on a CASIO WATCHES map

while the watch is connected with your phone.

●

Recording Your Current Location

Enter the Timekeeping Mode.

Navigating Between Modes

When you are in the location you want

to record, press (D).

This records, in phone memory, the

latitude and longitude of the location you

are in when you press the button, along

with the date and time.

●

[OK] appears when registration is

complete. [ERR] appears when

registration fails.

●

At this time the time settings of your

phone and watch will be synced with

each other.

●

Viewing a Recorded Location on a Map

Tap the “CASIO WATCHES” icon.

Perform the operation shown on the

phone screen to view recorded location

information.

Note

●

You can use CASIO WATCHES to

delete recorded location information.

Watch Operation Guide 5691

Connection

Connecting with a Phone

Your watch can connect with a phone that is

paired with it.

●

If the watch is not paired with the phone you

want to connect with, refer to the information

below and pair them.

Pair the watch with a phone.

●

Connecting with a Phone

1. Move the phone close to (within one meter

of) the watch.

Hold down (C) for at least three seconds

until [CNCT] starts to flash. Release the

button when the mode hand moves to

When a connection is established

between the watch and phone, [CNCT]

will stop flashing.

●

If connection fails for some reason,

[ERR] will appear on the display

momentarily and then the watch will

return to the Timekeeping Mode.

ConnectedTrying to connect

Important!

●

If you have problems establishing a

connection, it could mean that CASIO

WATCHES is not running on your

phone. On your phone’s home screen,

tap the “CASIO WATCHES” icon. After

the app starts up, hold down the

watch’s (C) button for at least three

seconds.

Note

●

The connection will be terminated if

you do not perform any operation on

the watch or phone for a fixed amount

of time.

To specify the connection limit time,

perform the following operation with

CASIO WATCHES: “Watch settings”

“Connection time with the app”.

Next, select a setting of 3 minutes, 5

minutes, or 10 minutes.

Disconnecting from Your Phone

Pressing any button will terminate a Bluetooth

connection and return to the Timekeeping

Mode.

DisconnectedConnected

Unpairing

Unpairing the watch from a phone requires

both CASIO WATCHES and watch

operations.

●

Deleting Pairing Information from

CASIO WATCHES

Tap the “CASIO WATCHES” icon.

Perform the operation shown on the

phone screen to unpair.

●

Deleting Pairing Information from the

Watch

Hold down (C) for at least one second

to enter the Timekeeping Mode.

Hold down (A) for at least two seconds.

Release the button when the name of the

currently selected Home City appears on

the display.

●

This is the setting mode. The hands

automatically shift out of the way for

easy viewing of the display and other

indicators.

Home City

Press (C) twice.

This causes the seconds to flash.

Seconds

Hold down (B) for at least three

seconds. This will cause the [PAIR] and

[CLR] indicators to alternate on the

display. Release the button when only

[CLR] is displayed.

This deletes the pairing information from

the watch and returns to the timekeeping

display.

Press (A) to return to the Timekeeping

Mode.

Note

●

While the setting is being configured,

the watch will exit the setting operation

automatically after about two or three

minutes of non-operation.

If you purchase another phone

You need to perform the pairing operation

whenever you want to establish a Bluetooth

connection with a phone for the first time.

Deleting Pairing Information from the

Watch

Pair the watch with a phone.

Watch Operation Guide 5691

Time Adjustment

Your watch can connect with a phone to obtain

information that it uses to adjust its date and

time setting.

Important!

●

When you are on an aircraft or in any

other location where radio signals area

may cause problems, enable the

watch’s Airplane Mode to disable

connection with your phone.

Using the Watch in a Medical

Facility or Aircraft

Referring to the information below, configure

the time setting in accordance with the method

that suits your own lifestyle.

Do you use a phone?

Time adjustment by connecting with your

phone is recommended.

Getting Ready

Auto Time Adjustment

12:30

If your phone cannot connect with the

watch

You can adjust time settings by

performing operations on the watch.

Using Watch Operations to Adjust the

Time Setting

Using Watch Operations to

Adjust the Time Setting

If your watch cannot connect with a phone for

some reason, you can use watch operations

to adjust date and time settings.

●

Setting a Home City

Use the procedure in this section to select a

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

area that observes summer time, you can also

configure a summer time setting.

Note

●

The initial factory default summer time

setting for all cities is [AUTO]. In many

cases, the [AUTO] setting lets you use

the watch without switching between

summer time and standard time.

●

While the setting is being configured,

the watch will exit the setting operation

automatically after about two or three

minutes of non-operation.

1. Enter the Timekeeping Mode.

Navigating Between Modes

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

Release the button when the name of the

currently selected Home City appears on

the display.

●

This is the setting mode. The hands

automatically shift out of the way for

easy viewing of the display and other

indicators.

Home City

3. Use (B) and (D) to change the Home City

setting.

●

Holding down (B) or (D) scrolls through

settings at high speed.

●

For details refer to the information

below.

City Table

4. Press (C).

5. Use (D) to select a summer time setting.

Each press of (D) cycles through available

settings in the sequence 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. Press (A) to complete the setting

operation.

●

Setting the Time/Date

1. Enter the Timekeeping Mode.

Navigating Between Modes

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

Release the button when the name of the

currently selected Home City appears on

the display.

●

This is the setting mode. The hands

automatically shift out of the way for

easy viewing of the display and other

indicators.

Home City

Watch Operation Guide 5691

3. Keep pressing (C) until the setting you

want to change is flashing.

●

Each press of (C) moves the flashing to

the next setting in the sequence shown

below.

Power Saving

Auto adjust

Illumination duration

Operation tone enable/disable

Day of the week language

Date display format

12/24-hour timekeeping

Day

Month

Ye a r

Minutes

Hours

Seconds

Summer time

Home City

4. Configure the date and time settings.

●

To reset the seconds to 00: Press (D).

1 is added to the minutes when the

current count is between 30 and 59

seconds.

●

For all the other settings, use (B) and (D)

to change the flashing setting.

Holding down (B) or (D) scrolls through

settings at high speed.

5. Repeat steps 3 and 4 to select time and

date settings.

6. Press (A) to complete the setting

operation.

Note

●

While the setting is being configured,

the watch will exit the setting operation

automatically after about two or three

minutes of non-operation.

●

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

Release the button when the name of the

currently selected Home City appears on

the display.

●

This is the setting mode. The hands

automatically shift out of the way for

easy viewing of the display and other

indicators.

Home City

3. Press (C) eight times.

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

display.

4. Press (D) to toggle the setting between

[12H] (12-hour timekeeping) and [24H]

(24-hour timekeeping).

24-hour

timekeeping

12-hour

timekeeping

5. Press (A) to complete the setting

operation.

Note

●

While the setting is being configured,

the watch will exit the setting operation

automatically after about two or three

minutes of non-operation.

Watch Operation Guide 5691

Using the Watch in a Medical

Facility or Aircraft

Whenever you are in a hospital, on an aircraft,

or in any other location where connection with

a phone may cause problems, you can

perform the procedure below to disable auto

time adjustment. To re-enable auto time

adjustment, perform the same operation

again.

1. Enter the Timekeeping Mode.

Navigating Between Modes

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

Release the button when the name of the

currently selected Home City appears on

the display.

●

This is the setting mode. The hands

automatically shift out of the way for

easy viewing of the display and other

indicators.

Home City

3. Press (C) 13 times.

This displays [RCVD].

4. Press (D) to toggle between the auto time

adjustment settings.

[OFF]: Auto time adjustment disabled.

[ON]: Auto time adjustment enabled.

5. Press (A) to complete the setting

operation.

Note

●

The auto time adjustment setting can

be changed only while the watch is

paired with a phone.

●

While the setting is being configured,

the watch will exit the setting operation

automatically after about two or three

minutes of non-operation.

World Time

World Time lets you look up the current time

in any one of 38 cities around the globe, and

UTC (Coordinated Universal Time).

Using CASIO WATCHES to

Configure World Time City

Settings

If the watch is paired with a phone, you can

also use CASIO WATCHES to set the World

Time city.

Configuring World Time Settings

Note

●

World Time cities that can be selected

only by using CASIO WATCHES

cannot be selected using watch

operations.

Checking World Time

1. Enter the World Time Mode.

Navigating Between Modes

After the currently selected World Time

City name appears, the watch will display

the current time in that city.

●

You can display the World Time City

while in the World Time Mode by

pressing (A).

World Time

World Time City

World Time City Setting

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

configure a summer time setting.

Note

●

The initial factory default summer time

setting for all cities is [AUTO]. In many

cases, the [AUTO] setting lets you use

the watch without switching between

summer time and standard time.

1. Enter the World Time Mode.

Navigating Between Modes

2. Use (D) to display the city you want.

●

Holding down (D) scrolls through

settings at high speed.

3. To change the summer time setting, hold

down (A) for at least two seconds.

Release the button when the current

summer time setting starts to flash.

●

This is the setting mode. The hands

automatically shift out of the way for

easy viewing of the display and other

indicators.

4. Use (D) to change the summer time

setting.

Each press of (D) cycles through settings

in the sequence 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.

5. Press (A) to exit the setting screen.

Watch Operation Guide 5691

Note

●

While the setting is being configured,

the watch will exit the setting operation

automatically after about two or three

minutes of non-operation.

●

While [UTC] is selected as the city, you

will not be able to change or check the

summer time setting.

●

If you select a World Time City with

CASIO WATCHES and then change to

a different city with a watch operation,

the CASIO WATCHES city information

is deleted from the watch.

Configuring World Time Settings

Swapping Your Home Time

and World Time

In the World Time mode, press (A) and (B) at

the same time to swap your Home City time

with your World Time.

After swappingBefore swapping

Home TimeWorld Time

Home Time World Time

Note

●

This function comes in handy when

you need to move to another time

zone. For details about how to use it,

go to the section below.

Moving to Another Time Zone

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 alarm sound is muted in the cases

described below.

ー　

When battery power is low

ー　

When watch is at Level 2 power saving

Power Saving Function

Using CASIO WATCHES to

Configure Alarm Settings

If the watch is paired with a phone, you can

also use CASIO WATCHES to set alarms.

Configuring Watch Settings

Configuring Alarm Settings

1. Enter the Alarm Mode.

Navigating Between Modes

2. Press (D) to scroll through alarm numbers

([AL1] to [AL5]) until the alarm you want to

configure is displayed.

Alarm number

Alarm time

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

Release the button when the hours digits

start to flash.

●

This is the setting mode. The hands

automatically shift out of the way for

easy viewing of the display and other

indicators.

●

While the setting is being configured,

the watch will exit the setting operation

automatically after about two or three

minutes of non-operation.

Alarm hour

4. Use (B) and (D) to change the hour setting.

●

Holding down (B) or (D) scrolls through

settings at high speed.

●

If you are using 12-hour timekeeping,

[P] indicates p.m.

5. Press (C).

This causes the minutes digits to flash.

Alarm minute

6. Use (B) and (D) to set the minute setting.

7. Press (A) to complete the setting

operation.

●

[ALM] is shown on the display while an

alarm is set.

Watch Operation Guide 5691

●

To stop the alarm

Pressing any button while the beeper is

sounding stops it.

Note

●

A beeper sounds for 10 seconds when

an alarm time is reached.

●

The watch will automatically return

from the Alarm Mode to the

Timekeeping Mode if you do not

perform any operation for about two or

three minutes.

Enabling the Hourly Time

Signal

1. Enter the Alarm Mode.

Navigating Between Modes

2. Use (D) to display the hourly time signal

screen ([SIG]).

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

between enabled and disabled.

●

[SIG] is displayed 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.

Hourly time signal

Alarm

1. Enter the Alarm Mode.

Navigating Between Modes

2. Use (D) to scroll through the alarm ([AL1]

to [AL5]) and hourly time signal ([SIG])

screens until the one you want to turn off

is displayed.

Alarm or hourly time signal

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

the hourly time signal.

●

Each press of (A) toggles between on

and off.

●

Turning off all of the alarms and the

hourly time signal causes [ALM] and

[SIG] to disappear from the display.

Note

●

If [ALM] remains on the display, it

means that at least one alarm is still

turned on. To turn off all of the alarms,

repeat steps 2 and 3 until the [ALM]

indicator is no longer displayed.

Moving to Another

Time Zone

Use the procedure below to easily change day

and time settings of the watch to a destination

location.

●

Before Boarding

1. Configure the World Time to the current

time at your destination.

Current time

Destination time

Using CASIO WATCHES to Configure

Settings

Using Watch Operations to Configure

Settings

2. Disable auto time adjustment.

Using the Watch in a Medical Facility or

Aircraft

Watch Operation Guide 5691

●

After Arriving

1. Swap the origin time zone time with the

destination time zone time.

After swappingBefore swapping

Destination time

Using CASIO WATCHES to Configure

Settings

Using Watch Operations to Configure

Settings

2. Enable auto time adjustment.

Using the Watch in a Medical Facility or

Aircraft

3. Adjust the time setting.

Triggering Immediate Time Adjustment

Stopwatch

The stopwatch measures elapsed time in

1/100-second units for the first hour, and in 1-

second units after that for up to 24 hours.

In addition to normal elapsed time

measurements, the stopwatch also lets you

take split time and lap time readings.

Split Times and Lap Times

●

Split time

A split time is the time elapsed from the start,

up to any point along the course of an event.

Goal

Split 3

Split 2

Split 1

Start

●

Lap time

A lap time shows the time elapsed during a

specific lap around a track, etc.

Lap 3 (lap number)

Lap 2 (lap number)

Lap 1 (lap number)

Start

Goal

Measuring Elapsed Time

1. Enter the Stopwatch Mode.

Navigating Between Modes

2. Use the operations below to measure

elapsed time.

Stop

Resume

Stop

Start

●

Elapsed time is shown in 1/100-second

units for the first hour of the

measurement. After the first hour,

elapsed time is shown in one-second

units.

1/100 seconds

Seconds

Minutes, seconds Hours, minutes

After first hourFirst hour

3. Press (A) to reset the stopwatch to all

zeros.

Watch Operation Guide 5691

Measuring a Split Time

1. Enter the Stopwatch Mode.

Navigating Between Modes

●

If a stopwatch timing operation is in

progress, press (D) to stop it and then

press (A) to reset the stopwatch to all

zeros before performing the operation

in step 2.

2. Press (A) to display [SPL].

Minutes, seconds

3. Use the operations below to measure

elapsed time.

●

Pressing (A) displays the elapsed time

up to that point (split time), alternating

with [SPL] for about eight seconds.

Stop

Split

Start

●

Elapsed time is shown in 1/100-second

units for the first hour of the

measurement. After the first hour,

elapsed time is shown in one-second

units.

1/100 seconds

Seconds

Minutes, seconds Hours, minutes

After first hourFirst hour

4. Press (A) to reset the stopwatch to all

zeros.

Measuring Lap Times

1. Enter the Stopwatch Mode.

Navigating Between Modes

●

If a stopwatch timing operation is in

progress, press (D) to stop it and then

press (A) to reset the stopwatch to all

zeros before performing the operation

in step 2.

2. Press (A) to display [LAP].

Minutes, seconds

3. Use the operations below to measure

elapsed time.

●

Each time you press (A), the watch

displays the time elapsed (lap time)

since the last lap time operation,

alternating with the lap number for about

eight seconds.

Stop

Start

Lap

●

Elapsed lap time is displayed in 1/100-

second units for the first hour. After that,

it is displayed in one-second units.

1/100 seconds

Seconds

Minutes, seconds Hours, minutes

After first hourFirst hour

4. Press (A) to reset the stopwatch to all

zeros.

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 is muted when battery power is

low.

Using CASIO WATCHES to

Configure Timer Settings

If the watch is paired with a phone, you can

also use CASIO WATCHES to set the timer

start time.

Configuring Watch Settings

Watch Operation Guide 5691

Setting the Countdown Start

Time

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

to 60 minutes.

●

If a timer countdown operation is in

progress, reset the timer to its current start

time before performing this operation.

Using the Timer

1. Enter the Timer Mode.

Navigating Between Modes

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

Release the button when the minutes

setting starts to flash.

●

This is the setting mode. The hands

automatically shift out of the way for

easy viewing of the display and other

indicators.

Minutes

3. Use (B) and (D) to change the minutes

setting.

●

Holding down (B) or (D) scrolls through

settings at high speed.

4. Press (C).

This causes the seconds digits to flash.

Seconds

5. Use (B) and (D) to change the seconds

setting.

6. Press (A) to exit the setting screen.

Note

●

Setting a start time of 00’00 will perform

a countdown of 60 minutes.

●

While the setting is being configured,

the watch will exit the setting operation

automatically after about two or three

minutes of non-operation.

Using the Timer

1. Enter the Timer Mode.

Navigating Between Modes

Minutes, seconds

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 (A).

3. Press any button to stop the tone.

Reminder

After you create a reminder for an

appointment, anniversary, or some other

event you don’t want to forget, the watch will

remind you when that day arrives.

Creating a Reminder

Use CASIO WATCHES to create reminders.

●

To use CASIO WATCHES, you first need to

pair your watch with a phone.

Getting Ready

●

If the watch is already paired with a phone,

use CASIO WATCHES to create reminders.

Configuring Reminder Settings

Checking Reminder Details

●

Checking reminders from tomorrow

onwards

The [REM] indicator appears on the display if

you use CASIO WATCHES to create a

reminder that is after today’s date. Pressing

(A) will switch the Timekeeping Mode screen

to the REM display, which will show reminder

item dates or days of the week, followed by

their titles.

●

Checking today’s reminders

[REM] flashes on the display during a day is

when there is an anniversary or event that was

created with CASIO WATCHES. Pressing (A)

will switch the Timekeeping Mode screen to

the REM display, which will show the titles of

today’s reminder items.

Watch Operation Guide 5691

Hand Alignment

Adjustment

Strong magnetism or impact can cause the

time indicated by the analog hands to become

different from the time on the digital display. If

this happens, adjust hand alignment.

Using CASIO WATCHES to

Adjust Hand Alignment

If the watch is paired with a phone, you can

also use CASIO WATCHES to adjust hand

alignment.

Adjusting Hand Alignment

1. Enter the Timekeeping Mode.

Navigating Between Modes

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

Release the button when [SUB] starts to

flash.

This enables adjustment of mode hand

alignment.

Mode hand

After five secondsAfter 3.5 seconds

3. If the mode hand is not aligned with 3

o’clock, use (B) and (D) to align it.

4. Press (C).

This enables adjustment of the hour and

minute hands.

Minute handHour hand

5. If the hour and minute hands are not at 12

o’clock, use (B) and (D) to align them.

6. Press (A) to exit the setting screen.

Note

●

During hand alignment adjustment, the

watch automatically returns to the

Timekeeping Mode after two or three

minutes of non-operation.

Other Settings

This section explains other watch settings you

can configure.

Changing the Date Display

Format

1. Enter the Timekeeping Mode.

Navigating Between Modes

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

until the name of the currently selected

Home City is displayed.

●

This is the setting mode. The hands

automatically shift out of the way for

easy viewing of the display and other

indicators.

Home City

3. Press (C) nine times.

This displays a screen for selecting the

date display format.

4. Press (D) to select a date display format.

[M.DD]: Month, day

[DD.M]: Day, month

5. Press (A) to exit the setting screen.

Note

●

While the setting is being configured,

the watch will exit the setting operation

automatically after about two or three

minutes of non-operation.

Watch Operation Guide 5691

Specifying the Day of the

Week Language

You can select any one of six languages for

the day of the week display in the Timekeeping

Mode.

1. Enter the Timekeeping Mode.

Navigating Between Modes

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

until the name of the currently selected

Home City is displayed.

●

This is the setting mode. The hands

automatically shift out of the way for

easy viewing of the display and other

indicators.

Home City

3. Press (C) 10 times.

This causes the language setting to flash.

4. Use (D) to select a language.

[ENG]: English

[ESP]: Spanish

[FRA]: French

[DEU]: German

[ITA]: Italian

[PyC]: Russian

5. Press (A) to exit the setting screen.

Note

●

While the setting is being configured,

the watch will exit the setting operation

automatically after about two or three

minutes of non-operation.

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. Hold down (A) for at least two seconds

until the name of the currently selected

Home City is displayed.

●

This is the setting mode. The hands

automatically shift out of the way for

easy viewing of the display and other

indicators.

Home City

3. Press (C) 11 times.

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

the display.

4. Press (D) to select [KEY♪] or [MUTE].

[KEY♪]: Operation tone enabled.

[MUTE]: Operation tone muted.

5. Press (A) to exit the setting screen.

Note

●

While the setting is being configured,

the watch will exit the setting operation

automatically after about two or three

minutes of non-operation.

●

Note that alarm and timer tones will still

sound even while the operation tone is

muted.

Configuring Power Saving

Function Settings

1. Enter the Timekeeping Mode.

Navigating Between Modes

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

until the name of the currently selected

Home City is displayed.

●

This is the setting mode. The hands

automatically shift out of the way for

easy viewing of the display and other

indicators.

Home City

3. Press (C) 14 times.

This displays [PSON] or [PSOF].

4. Press (D) to toggle between on and off.

[PSON]: Power Saving enabled.

[PSOF]: Power Saving disabled.

5. Press (A) to exit the setting screen.

Note

●

While the setting is being configured,

the watch will exit the setting operation

automatically after about two or three

minutes of non-operation.

●

For details about Power Saving, refer

to the information below.

Power Saving Function

Watch Operation Guide 5691

Resetting Watch Settings

This section explains how to return the watch

settings below to their initial factory defaults.

●

Watch Settings

●

Reminder

●

Stopwatch

●

Timer

●

Alarm

1. Enter the Timekeeping Mode.

Navigating Between Modes

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

until the name of the currently selected

Home City is displayed.

●

This is the setting mode. The hands

automatically shift out of the way for

easy viewing of the display and other

indicators.

Home City

3. Press (C) twice.

This causes the seconds to flash.

Seconds

4. Hold down (B) for at least seven seconds.

This will cause the [ALL] and [RESET]

indicators to alternate on the display.

Release the button when only [RESET] is

displayed.

5. Press (A) to exit the setting screen.

Note

●

While the setting is being configured,

the watch will exit the setting operation

automatically after about two or three

minutes of non-operation.

●

Resetting the watch will also delete

information for pairing the watch with a

phone, and unpair them.

Other Information

This section provides non-operational

information you also need to know. Refer to

this information as required.

City Table

City Offset

UTC

Coordinated

Universal Time

LON:

LONDON

London 0

PAR:

PARIS

Paris +1

ATH:

ATHENS

Athens +2

JED:

JEDDAH

Jeddah +3

THR:

TEHRAN

Tehran +3.5

DXB:

DUBAI

Dubai +4

KBL:

KABUL

Kabul +4.5

KHI:

KARACHI

Karachi +5

DEL:

DELHI

Delhi +5.5

KTM:

KATHMANDU

Kathmandu +5.75

DAC:

DHAKA

Dhaka +6

RGN:

YANGON

Yangon +6.5

BKK:

BANGKOK

Bangkok +7

HKG:

HONG KONG

Hong Kong +8

EUC:

EUCLA

Eucla +8.75

TYO:

TOKYO

Tokyo +9

ADL:

ADELAIDE

Adelaide +9.5

SYD:

SYDNEY

Sydney +10

LDH:

LORD HOWE

ISLAND

Lord Howe

Island

+10.5

NOU:

NOUMEA

Noumea +11

WLG:

WELLINGTON

Wellington +12

CHT:

CHATHAM

ISLAND

Chatham

Islands

+12.75

TBU:

NUKUALOFA

Nuku’alofa +13

CXI:

KIRITIMATI

Kiritimati +14

City Offset

BAR:

BAKER ISLAND

Baker Island -12

PPG:

PAGO PAGO

Pago Pago -11

HNL:

HONOLULU

Honolulu -10

NHV:

MARQUESAS

ISLANDS

Marquesas

Islands

-9.5

ANC:

ANCHORAGE

Anchorage -9

LAX:

LOS ANGELES

Los Angeles -8

DEN:

DENVER

Denver -7

CHI:

CHICAGO

Chicago -6

NYC:

NEW YORK

New York -5

YHZ:

HALIFAX

Halifax -4

YYT:

ST. JOHN’S

St. John’s -3.5

RIO:

RIO DE JANEIRO

Rio de Janeiro -3

FEN:

F. DE NORONHA

Fernando de

Noronha

-2

RAI:

PRAIA

Praia -1

●

The information in the above table is current

as of January 2022.

●

Time zones may change and UTC

differentials may become different from

those shown in the table above. If this

happens, connect the watch with a phone

to update the watch with the latest time zone

information.

Summer Time Table

When [AUTO] is selected for a city that

observes summer time, switching between

standard time and summer time will be

performed automatically at the timing shown

in the table below.

Note

●

Summer time start and end dates for

your current location may be different

from those shown below. If this

happens, you can have new summer

time information for your Home City

and World Time city sent to the watch

by connecting the watch with a phone.

If the watch is not connected with a

phone, you can change the summer

time setting manually.

Watch Operation Guide 5691

City Name

Summer Time

Start

Summer Time

End

London

01:00, last

Sunday in March

02:00, last

Sunday in

October

Paris

02:00, last

Sunday in March

03:00, last

Sunday in

October

Athens

03:00, last

Sunday in March

04:00, last

Sunday in

October

Tehran

00:00, March 22

or 21

00:00,

September 22 or

Sydney,

Adelaide

02:00, first

Sunday in

October

03:00, first

Sunday in April

Lord Howe

Island

02:00, first

Sunday in

October

02:00, first

Sunday in April

Wellington

02:00, last

Sunday in

September

03:00, first

Sunday in April

Chatham

Islands

02:45, last

Sunday in

September

03:45, first

Sunday in April

Anchorage

02:00, second

Sunday in March

02:00, first

Sunday in

November

Los

Angeles

02:00, second

Sunday in March

02:00, first

Sunday in

November

Denver

02:00, second

Sunday in March

02:00, first

Sunday in

November

Chicago

02:00, second

Sunday in March

02:00, first

Sunday in

November

New York

02:00, second

Sunday in March

02:00, first

Sunday in

November

Halifax

02:00, second

Sunday in March

02:00, first

Sunday in

November

St. John’s

02:00, second

Sunday in March

02:00, first

Sunday in

November

●

The information in the above table is current

as of January 2022.

Supported Phones

For information about phones that can

connect with the watch, visit the CASIO

website.

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

Specifications

Accuracy at normal temperature :

±15 seconds per month average when time

adjustment by communication with a phone is

not possible.

Timekeeping :

Analog

Hour, minute (moves every 20 seconds)

Digital

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

the week

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

Full Auto Calendar (2000 to 2099)

Summer Time

World Time :

38 cities (38 time zones) and Coordinated

Universal Time (UTC)

Summer time

Home Time swapping

Stopwatch :

Measurement unit:

1/100 seconds (first hour)

1 second (after first hour)

Measuring range: 23 hours 59 minutes 59

seconds

Measurement Functions:

Elapsed time, split times, lap times

Timer :

Measuring unit: 1 second

Measuring range: 60 minutes

Time setting unit: 1 second

Time setting range: 1 second to 60 minutes

10-second beeper when the end of the

countdown is reached

Alarm :

Time alarms

Number of alarms

Setting units

Hours, minutes

Alarm tone duration: 10 seconds

Hourly time signal: Beep every hour on the

hour

Mobile Link :

Auto Time Correction

Time setting adjusted automatically at

preset time.

One-touch Time Correction

Manual connection and time adjustment

Phone finder

Watch operation sounds the alert sound

of the mobile phone.

World Time

Current time for approximately 300 cities

selected for the watch

Home Time/World Time swapping

Auto Summer Time Switching

Automatic switching between standard

time and summer time.

Timer Settings

Alarm Settings

Reminder

Reminds you of anniversaries and other

important dates.

Hand alignment correction

Data Communication Specifications

Bluetooth

Frequency Band: 2400MHz to 2480MHz

Maximum Transmission: 0 dBm (1 mW)

Communication range: Up to 2 meters

(depends on environment)

Double LED light :

Face LED light: Super Illuminator,

afterglow, selectable illumination duration

(approximately 1.5 seconds or 3 seconds)

LCD LED backlight: Super Illuminator,

afterglow, selectable illumination duration

(approximately 1.5 seconds or 3 seconds)

Other :

Power Saving, battery Indicator, selectable

date format, selectable day of the week

language, auto time adjustment on/off,

operation tone on/off, Hand Shift

Power Supply :

Solar panel and one rechargeable battery

Battery operating time: Approximately 7

months

Conditions:

Auto Time Adjustment: 4 times/day

Alarm: Once (10 seconds)/day

Illumination: Once (1.5 seconds)/day

Power Saving: 6 hours/day

Specifications are subject to change without

notice.

Watch Operation Guide 5691

Copyrights and Registered

Copyrights

●

The Bluetooth

word mark and logos are

registered trademarks owned by the

Bluetooth SIG, Inc. and any use of such

marks by CASIO Computer Co., Ltd. is

under license.

●

iPhone and App Store are trademarks of

Apple Inc. in the United States and other

countries.

●

iOS is a trademark or registered trademark

of Cisco Systems, Inc.

●

GALAXY is a registered trademark of

Samsung Electronics Co., Ltd.

●

Android and Google Play

are trademarks

or registered trademarks of Google LLC.

●

Other company names and product names

used herein are trademarks or registered

trademarks of their respective companies.

Troubleshooting

I can’t pair the watch with a

phone.

I’ve never been able to establish a

(pairing) connection between the

watch and phone.

Are you using a supported phone model?

Check if the phone model and its

operating system are supported by the

watch.

For information about supported phone

models, visit the CASIO Website.

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

Did you install CASIO WATCHES on your

phone?

CASIO WATCHES needs to be installed

on your phone in order to connect with the

watch.

Install the app on your phone.

Are your phone’s Bluetooth settings

configured correctly?

Configure the phone’s Bluetooth settings.

For details about setting procedures, see

your phone documentation.

iPhone Users

●

“Settings”

“Bluetooth”

●

“Settings”

“Privacy”

“Bluetooth”

“CASIO WATCHES”

Android Users

●

Enable Bluetooth.

Other than the above.

Some phones need to have BT Smart

disabled to use CASIO WATCHES. For

details about setting procedures, see your

phone documentation.

On the Home Screen, tap: “Menu”

“Settings”

“Bluetooth”

“Menu”

“BT Smart settings”

“Disable”.

I can’t reconnect the watch

and phone.

The watch will not re-connect with the

phone after they are disconnected.

Is CASIO WATCHES running?

The watch cannot re-connect with your

phone unless CASIO WATCHES is

running on the phone. On your phone’s

Home Screen, tap the “CASIO

WATCHES” icon. Next, on the watch, hold

down (C) for at least three seconds.

Have you tried turning your phone off and

then back on again?

Turn your phone off and then back on, and

then tap the “CASIO WATCHES” icon.

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

least three seconds.

Is a timer countdown operation in

progress?

Connection with a phone is not possible

while there is 30 seconds or less

remaining on a countdown timer

operation. Stop the countdown operation

before connecting with the phone.

Watch Operation Guide 5691

I can’t connect while my phone is in

the Airplane Mode.

Connection with the watch is not possible

while the phone’s Airplane Mode is enabled.

After disabling the phone’s Airplane Mode, go

to the phone’s Home Screen and tap the

“CASIO WATCHES” icon. Next, on the watch,

hold down (C) for at least three seconds.

I changed the phone’s Bluetooth

from enabled to disabled, and now I

can’t connect anymore.

On your phone, re-enable Bluetooth, and then

go to the Home Screen and tap the “CASIO

WATCHES” icon. Next, on the watch, hold

down (C) for at least three seconds.

I can’t connect after turning off the

phone.

Turn your phone off and then back on, and

then tap the “CASIO WATCHES” icon. Next,

on the watch, hold down (C) for at least three

seconds.

Phone-Watch Connection

I can’t establish a connection

between the phone and watch.

Have you tried turning your phone off and

then back on again?

Turn your phone off and then back on, and

then tap the “CASIO WATCHES” icon.

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

least three seconds.

Has the watch been re-paired with the

phone?

After deleting pairing information from

CASIO WATCHES, re-pair them.

Deleting Pairing Information from

CASIO WATCHES

Pair the watch with a phone.

If you are unable to establish a

connection...

After deleting pairing information from the

watch, re-pair it with your phone.

Deleting Pairing Information from the

Watch

Pair the watch with a phone.

Changing to a Different

Phone Model

Connecting the current watch to

another phone.

Delete the pairing information from your watch

and then pair it with the phone you want to

connect with.

If you purchase another phone

Auto Time Adjustment by

Bluetooth Connection (Time

Adjustment)

When does the watch adjust its time?

The watch will connect with the phone and

perform auto time adjustment at around 12:30

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

connection is automatically terminated after

auto time adjustment is complete.

Auto time adjustment is not

performed at a scheduled time.

Is auto time adjustment not being

performed according to its normal

schedule?

Note that auto time adjustment is not

performed for 24 hours after swapping of

the Home Time and World Time, or after

the time setting is adjusted manually on

the watch. Auto time adjustment will

resume 24 hours after either of the above

operations is performed.

Is auto time adjustment enabled?

Auto time adjustment will not be

performed at the scheduled times unless

it is enabled. Enable auto time

adjustment.

Using the Watch in a Medical Facility or

Aircraft

Time is not displayed correctly.

If your phone is unable to receive a signal

because you are outside its service range or

for some other reason, the watch may not be

able to display the correct time. If this

happens, connect the phone to its network

and then adjust the time setting.

Hands are out of alignment.

Strong magnetism or impact can cause the

hands to go out of alignment. Adjust hand

alignment.

Adjusting Hand Alignment

●

Check the information below to find out how

to align the hands manually.

Hand Alignment Adjustment

Watch Operation Guide 5691

Alarm and Hourly Time

Signal

An alarm does not sound.

Is the watch’s battery charged?

Keep the watch exposed to light until it

recharges sufficiently.

Charging

Other than the above.

The alarm’s settings may not be

configured. Configure the alarm settings.

Configuring Alarm Settings

The hourly time signal does not

sound.

Is the watch’s battery charged?

Keep the watch exposed to light until it

recharges sufficiently.

Charging

Other than the above.

The hourly time signal may be disabled.

Enable the hourly time signal.

Enabling the Hourly Time Signal

Hand Movement and

Indications

I don’t know what mode the watch is

in.

You can determine the current mode by

checking the mode hand position. Use (C) to

navigate between modes.

Navigating Between Modes

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

●

Watch is connected with a phone to adjust

its time setting.

Auto Time Adjustment

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 is not correct. Select

the correct setting.

Setting a Home City

The time indicated by the hands is

different from the digital time.

Strong magnetism or impact can cause the

hands to go out of alignment. Adjust hand

alignment.

Adjusting Hand Alignment

●

Check the information below to find out how

to align the hands manually.

Hand Alignment Adjustment

Other

I can’t find the information I need

here.

Visit the website below.

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

Watch Operation Guide 5691

Casio GM-B2100BPC

Product's Documents

User Manual

Specifications

Casio GM-B2100BPC Questions and Answers