CASIO GT003TH-8A
Owner's Manual

2-2. QW-1699
� Press M to change from mode to mode. Timekeeping Mode
A B

GENERAL GUIDE

Beat Counter Mode

Stopwatch Mode

Alarm Mode

v

M L

C

v

TIMEKEEPING MODE
To set the time and date
Day of week Month � Day

To turn the EL alarm on and off
In the Timekeeping Mode, hold down B for about two seconds to toggle the EL alarm on (FLASH indicator displayed) and off (FLASH indicator not displayed). � When the EL alarm is on, the backlight flashes while the daily alarm and hourly time signal tones are sounding. Also, the backlight stays on for about five seconds instead of the normal two seconds. � When an auto light switch operation causes the backlight to turn on while the EL alarm is turned on, the backlight stays lit for about two seconds, and then flashes for two seconds.

A

B

1. Hold down A while in the Timekeeping Mode until the seconds digits start to flash on the display. The seconds flash because they are selected. 2. Press M to change the selection in the following sequence.
Seconds

M
PM indicator

M
Hour : Minutes

About the Auto Light Switch
While the auto light switch is turned on, the backlight automatically lights for about two seconds whenever you position your wrist as described below. Avoid wearing the watch on the inside of your wrist. Doing so causes the auto light switch to operate when it is not needed, which shortens battery life.

Seconds

Hour

Minutes 12/24-Hour Format

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Day

Month

Year

Moving the watch to a position that is parallel to the ground and then tilting it towards you more than 40 degrees causes the backlight to illuminate.

3. While the seconds digits are selected (flashing), press C to reset the seconds to 00. � If you press C while the seconds count is in the range of 30 to 59, the seconds are reset to 00 and 1 is added to the minutes. If the seconds count is in the range of 00 to 29, the minutes count is unchanged. 4. While any other digits (besides seconds) are selected (flashing), press C to increase the number. While the 12/24-hour setting is selected, press C to switch between the two formats. � Holding down C changes the current selection at high speed. � When the 12-hour format is selected, the12H indicator appears on the display. With the 12-hour format, the P (PM) indicator appears on the display to indicate �p.m.� times. There is no indicator for �a.m.� times. � Selecting the 24-hour format causes the 24H and the 24 indicators to appear on the display. 5. After you set the time and date, press A to return to the Timekeeping Mode. � The day of the week is automatically set in accordance with the date. � The date can be set within the range of January 1, 1995 to December 31, 2039. � If you do not operate any button for a few minutes while a selection is flashing, the flashing stops and the watch goes back to the Timekeeping Mode automatically.

Parallel to ground

More than 40°

� The backlight may not illuminate if the face of the watch is more than 15 degrees off the parallel as shown below. Make sure that the back of your hand is parallel to the ground.

v

Parallel to ground

More than 15 degrees too high

More than 15 degrees too low

BACKLIGHT FUNCTION
Auto light switch on indicator

A

M L
FLASH indicator

A backlight that uses an EL (electro-lumunescent) panel causes the entire display to glow for easy reading in the dark. An auto light switch causes the EL backlight to turn on B when the watch is angled toward your face for reading. An EL alarm feature can be turned on so the backlight flashes whenever an alarm or hourly time signal sounds. � The auto light switch on indicator is shown on the display in all modes while the auto light switch is on. C � The FLASH indicator is shown on the display in all modes while the EL alarm is on.

� Static electricity or magnetic force can interfere with proper operation of the auto light switch. If the auto light switch does not illuminate, try moving the watch back to the starting position (parallel with the ground) and then tilt it back toward you again. If this does not work, drop your arm all the way down so it hangs at your side, and then bring it back up again. � Under certain conditions the backlight may not light until about one second or less after turn the the backlight. malfunction of face of the watch towards you. This does not necessarily indicate Warning! � Never try to read your watch when mountain climbing or hiking in areas that are dark or in areas with poor footing. Doing so is dangerous and can result in serious personal injury. � Never try to read your watch when running where there is danger of accidents, especially in locations where there might be vehicular or pedestrian traffic. Doing so is dangerous and can result in serious personal injury. � Never try to read your watch when riding on a bicycle or when operating a motorcycle or any other motor cycle. Doing so is dangerous and can result in a traffic accident and serious personal injury. � When you are wearing the watch, make sure that its auto light switch is turned off before riding on a bicycle or operating a motorcycle or any other motor vehicle. Sudden and unintended operation of the auto light switch can create a distraction, which can result in a traffic accident and serious personal injury. To turn the auto light switch on and off In the Timekeeping Mode, hold down C for one second to turn the auto light switch on ( displayed) and off ( not displayed). � In order to protect against running down the battery, the auto light switch is automatically turned off approximately three hours after you turn it on. Repeat the above procedure to turn the auto light switch back on if you want.

Note � The backlight of the watch employs an electro-luminescent (EL) light, which loses illuminating power after very long use. � The illumination provided by the backlight may be hard to see when viewed under direct sunlight. � The watch will emit an audible sound whenever the display is illuminated. This is caused by a transistor that vibrates when the EL panel lights up. It does not indicate malfunction of the watch. � The backlight automatically turns off whenever an alarm sounds.

To manually turn on the backlight
Pressing L in the Timekeeping, Stopwatch or Alarm Mode causes the backlight to turn on for about two seconds. Pressing C in the Beat Counter Mode also causes the backlight to turn on for a fixed amount of time. � The backlight normally stays on for about two seconds and then turns off automatically. When the EL alarm is turned on, however, the backlight stays on for about five seconds instead of two seconds. � The above operations turn on the backlight, regardless of the current auto light switch and EL alarm settings.

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