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Manual Casio G-Shock GA-810B-1A9ER Watch

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Manual

Operation Guide 5535

E-29

Memory

The watch has enough memory to hold up to 121records for session start

information (date and time), and lap time records. You can record up to 120lap

times.

x Session start information (date and time) requires one record for each session. A

session is from the start of measurement up the point the stopwatch is reset.

x Each lap time uses one record.

Example 1: Single session (from start to reset)

Start information (date and time) record + 120lap time records =

121records in total

Example 2:

Multiple sessions

Session 1: Start information (date and time) record + 60lap time

records = 61records

Session 2: Start information (date and time) record + 59lap time

records = 60records

Total: 121records

E-28

Note

x The watch will exit the lap time screen automatically after about eight seconds.

x An ongoing elapsed time measurement operation will continue internally even if

you change to another mode. However, if you exit the Stopwatch Mode while a

lap time is displayed, the lap time will not be displayed when you return to the

Stopwatch Mode.

E-27

LAP indicator

LAP time

x Each press of B records the current lap time. Memory can hold up to 120lap

time records.

x Recording a lap time while there are 120records in memory will automatically

delete the oldest record to make room for the new one.

x The final lap time (time displayed when the elapsed time operation is stopped) is

recorded in memory when the stopwatch is reset to all zeros.

E-26

Entering from Another Mode (including the Timekeeping Mode)

Use C to select the Stopwatch Mode as shown on page E-10.

x To enter from the Timekeeping Mode using this method, press C once.

x This will display the stopwatch screen in the same status as it was the last time you

exited the Stopwatch Mode.

To perform an elapsed time operation

D D D B

Start Stop (Resume) (Stop) Reset

To perform lap time measurement

B B

......

D B

Start Lap (LAP1) Lap (LAP2) Stop Reset

E-25

Entering Directly from the Timekeeping Mode

If the stopwatch was reset to all zeros the last time you used it, a new elapsed time

operation will start as soon as you enter the Stopwatch Mode.

See page E-26 for information about measuring an elapsed time.

1. In the Timekeeping Mode, press D.

This will result in one of the following, depending on the status of the stopwatch the

last time you exited the Stopwatch Mode.

x Stopwatch reset: Timing starts.

One-press timing start from the Timekeeping Mode (direct timing start from the

Timekeeping Mode).

x If an ongoing timing operation is paused: Timing remains paused.

x If an ongoing timing operation is in progress*: Timing continues to be performed.

* An ongoing stopwatch timing operation continues even if you navigate to

another mode from the Stopwatch Mode.

Now you can perform the same operations as those shown on page E-26.

E-24

What is a lap time?

A lap time is the time elapsed over a specific segment of a race.

Example: Car race on an oval track

Start

Lap 1

Lap 2

Lap 3

To enter the Stopwatch Mode

You can enter the Stopwatch Mode using any one of the methods below.

E-23

Time Range Display Switching

Whenever the elapsed time exceeds 1 hour, the measurement changes from

1/100-second units to 1-second units.

Seconds Minutes

Minutes Hour

1/100 seconds Seconds

E-22

Using the Stopwatch

The stopwatch measures elapsed time and lap times. Up

to 120lap times can be stored in memory.

x The measurement range of the stopwatch is 23hours,

59minutes, 59seconds. When the measurement range

is exceeded, measurement stops (display becomes0).

Seconds

Minutes

Measurement

in progress

1/100 seconds

E-21

To change the Daylight Saving Time (summer time) setting

1. In the Timekeeping Mode, hold down A until the

seconds digits start to flash (about two seconds).

x This enables setting of the seconds.

2. Press C to display the DST setting mode.

3. Press D to toggle between Daylight Saving Time (ON)

and Standard Time (OFF).

4. After the setting is the way you want, press A to

return to the Timekeeping Mode.

x The

DST indicator appears to indicate that Daylight

Saving Time is turned on.

Note

x 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.

DST indicator

E-20

Note

x Resetting the seconds to 00 while the current count is in the range of 30 to

59causes the minutes to be increased by 1.

x The watch’s built-in full automatic calendar makes allowances for different month

lengths and leap years. Once you set the date, there should be no reason to

change it except after you have the watch’s battery replaced.

x The day of the week changes automatically when the date changes.

x While the 12-hour format is selected for timekeeping, a P (PM) indicator will appear

for times from noon to 11:59 p.m. No indicator appears for times from midnight to

11:59 a.m. With 24-hour format, time is displayed from 0:00 to 23:59, without any

P (PM) indicator.

Download manual in English (PDF, 0.41 MB)

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Christopher Norris 18-03-2021
This is the most difficult watch to set that I have EVER owned. I would have never bought it if I would have known this.

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More about this manual

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Specifications

Brand	Casio
Model	G-Shock GA-810B-1A9ER
Category	Watches
File type	PDF
File size	0.41 MB

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Frequently Asked Questions about Casio G-Shock GA-810B-1A9ER Watch

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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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