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Manual Casio G-Shock GA-100BR-1AER Watch

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Manual

Operation Guide 5081

MO0911-EA

Getting Acquainted

Congratulations upon your selection of this CASIO watch. To get the most out of your

purchase, be sure to read this manual carefully.

About This Manual

• Depending on the model of your watch, display text appears either as dark figures

on a light background or light figures on a dark background. All sample displays in

this manual are shown using dark figures on a light background.

• Button operations are indicated using the letters shown in the illustration.

• Each section of this manual provides you with the information you need to perform

operations in each mode. Further details and technical information can be found in

the “Reference” section.

Alarm Mode

Countdown Timer Mode

World Time Mode

Stopwatch Mode

▲

General Guide

• Press C to change from mode to mode.

• In any mode (except a setting mode), press B to illuminate the display.

Timekeeping Mode

Press C.

▲

Timekeeping

You can adjust the Home Time city date and time in the Timekeeping Mode.

• Pressing D in the Timekeeping Mode will toggle lower left display between the

screens shown below.

Home City Date Home City Time

▲

Date Seconds

Day of the week

Hour

Minutes

SecondsPM indicator

Day of the week

To set the time and date

1. In the Timekeeping Mode, hold down A for about three

seconds until the city code flashes on the lower right

display. This is the setting mode.

2. Use D and B to select the city code you want.

• Make sure you select your Home City code before

changing any other setting.

• For full information on city codes, see the “City Code

Table”.

Hour

Minutes

City code

PM indicator

Seconds

3. Press C to change the flashing screen content in the sequence shown below to

select the other setting.

Seconds

12/24-Hour

Format

Hour

Minutes

DST

Month

Year

City Code

Day

Illumination

Duration

4. When the timekeeping setting you want to change is flashing, use D or B to

change it as described below.

Change the city code

Toggle the DST setting between

Daylight Saving Time (

) and

Standard Time (

Use D (east) and B

(west).

Press D.

To do this: Do this:Screen:

5. Press A to exit the setting mode.

• The day of the week is displayed automatically in accordance with the date (year,

month, and day) settings.

Toggle between 12-hour ( ) and

24-hour ( ) timekeeping

Reset the seconds to

Change the hour and minutes

Change the year, month, or day

Toggle the display illumination

duration between 1.5 seconds (

)

and three seconds (

)

Press D.

Use D (+) and B (–).

Press D.

Daylight Saving Time (DST)

Daylight Saving Time (summer time) advances the time setting by one hour from

Standard Time. Remember that not all countries or even local areas use Daylight

Saving Time.

To change the Daylight Saving Time (summer time) setting

1. In the Timekeeping Mode, hold down A for about three

seconds until the city code flashes on the lower right

display. This is the setting mode.

2. Press C. This will display the DST setting screen.

3. Use D to toggle the DST setting on and off.

DST off ( ) DST on ( )

• The default DST setting is OFF ( ).

4. When the setting you want is selected, press A to exit

the setting mode.

• The DST indicator appears to indicate that Daylight

Saving Time is turned on.

DST indicator

12-hour and 24-hour timekeeping

• With the 12-hour format, the PM indicator appears above the hour digits for times in

the range of noon to 11:59 p.m. and no indicator appears for times in the range of

midnight to 11:59 a.m.

• With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without

the PM indicator.

• The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is

applied in all other modes.

Stopwatch

You can use the stopwatch to measure elapsed time, lap

times and split times. If you specify a distance value, the

stopwatch also will calculate and display speeds.

• The digital display range of the stopwatch is 99 hours,

59 minutes, 59.999 seconds. The stopwatch continues

to run until you stop it. If it reaches the above limit, it will

restart the time measurement from zero.

• The stopwatch operation continues even if you exit the

Stopwatch Mode. If you exit the Stopwatch Mode while a

stopwatch operation is in progress, the segments in the

upper right dial will appear and disappear sequentially

as stopwatch seconds are counted. This is to let you

know that a stopwatch operation is in progress.

• All of the operations in this section are performed in the

Stopwatch Mode, which you enter by pressing C.

Speed hand

Important!

• Check to make sure that the speed hand is not moving before you perform any

Stopwatch Mode button operation.

Specifying a Distance Value

You can use the procedure below to specify a distance value, if you want. If you

specify a distance value, the watch will calculate and indicate speed for certain

stopwatch operations.

• The distance value represents kilometers, miles, or any other distance unit you want.

Specifying a distance value of 10.0, for example, can mean 10.0 kilometers or 10.0

miles.

• No speed calculation is performed when 0.0 is specified as the current distance

value.

• For lap time readings, you can specify either the lap distance (when all the laps are

the same distance) or the total race distance.

• For split time readings, you can specify the total race distance only. Though the

watch will indicate a speed each time you take a split reading, they will be based on

the total race distance, and so they will not indicate actual intermediate split speeds.

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Specifications

Brand	Casio
Model	G-Shock GA-100BR-1AER
Category	Watches
File type	PDF
File size	0.64 MB

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Frequently Asked Questions about Casio G-Shock GA-100BR-1AER Watch

Our support team searches for useful product information and answers to frequently asked questions. If you find an inaccuracy in our frequently asked questions, please let us know by using our contact form.

A battery in my device is oxidized, can I still safely use it? Verified

Ja, the device can still be safely used. Firstly, remove the oxidizd battery. Never use bare hands to do this. Then clean the battery compartment with a cotton swab dipped in vinegar or lemon juice. Let it dry and insert new batteries.

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My mechanical watch runs fast, what can I do? Verified

This might be caused by exposure to a magnetic field. It can be solved by a demagnetisation process performed by a professional watchmaker.

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What do AM and PM stand for? Verified

AM stands for Ante Meridiem and indicates that the time is before midday. PM stands for Post Meridiem and indicates that the time is past midday.

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What is a 'Chronograph'? Verified

A 'Chronograph' is literally a 'writer of time'. The term is used to describe clocks and watches that tell the time of day as well as measure a certain period of time, like a stopwatch.

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What is GMT? Verified

GMT stands for Greenwich Mean Time (sometimes called UTC, standing for Coordinated Universal Time). It is the time for the longitude 0, that passes through Greenwich near London.

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What is a quartz movement? Verified

Watches and clocks with a quartz movement are driven by a battery. This sends an electric current through quartz crystals that will vibrate. These vibrations are passed on to the movement. Because the vibrations have a fixed frequency, watches and clocks with a quartz movement are extremely precise.

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There is moisture on the inside of the glass of my Casio watch, what should I do? Verified

Casio states that if the moisture appeared after an extreme change in temperature and disappears relatively quickly afterwards, there is probably nothing wrong. If the moisture does not disappear, you should have your watch repaired as soon as possible.

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