USER’S GUIDE 2519
Stopwatch
Reference
1/100 second
Hours Seconds
Minutes
The stopwatch lets you measure elapsed time, split times, and two finishes.
•The display range of the stopwatch is 23 hours, 59 minutes, 59.99 seconds.
•The stopwatch continues to run, restarting from zero after it reaches its limit, until you stop it.
•The stopwatch measurement operation continues even if you exit the Stopwatch Mode.
•Exiting the Stopwatch Mode while a split time is frozen on the display clears the split time and returns to elapsed time measurement.
•All of the operations in this section are performed in
the Stopwatch Mode, which you enter by pressing
C.
This section contains more detailed and technical information about watch operation. It also contains important precautions and notes about the various features and functions of this watch.
Auto return features
•If you leave a screen with flashing digits for two or three minutes without performing any operation, the watch automatically saves any settings you have made up to that point and exits the setting screen.
Data and Setting Scrolling
The D button is used to scroll through setting screen data on the display. Holding down this button during a scroll operation scrolls through the data at high speed.
To measure times with the stopwatch
Elapsed time
Start | Stop | Stop | Clear | |
Split time |
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Start | Split | Split release | Stop | Clear |
| (SPL displayed) |
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Two Finishes |
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Start | Split | Stop | Split release | Clear |
| First runner | Second runner | Display time of |
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| finishes. | finishes. | second runner. |
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| Display time of |
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| first runner. |
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Dual Time
The Dual Time Mode lets you keep track of time in a different time zone.
•In the Dual Time Mode, the seconds count is synchronized with the seconds count of the Timekeeping Mode.
To set the Dual Time
1. Press C to enter the Dual Time Mode.
2. In the Dual Time Mode, hold down A until the hour setting starts to flash, which indicates the setting screen.
3. Press C to change the selection in the following sequence.
Hour 
Minutes
Hour : Minutes Seconds
4.Press D to increase the setting.
5.Press A to exit the setting screen.
Backlight Precautions
The backlight uses an LED
In any mode, press B to illuminate the display for about one second.
•The illumination provided by the backlight may be hard to see when viewed under direct sunlight.
•The backlight automatically stops illuminating whenever an alarm sounds.
•Frequent use of the backlight shortens the battery life.
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