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USER’S GUIDE 2453/2642
3
Reference
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 Display
The Auto Display feature of this watch automatically
cycles through the available color patterns.
To turn off Auto Display
Press any button to turn off Auto Display.
Doing so also performs the corresponding button function
as described below.
A or B: Enters the Timekeeping Mode.
C: Enters the Telememo Mode.
D: Toggles between 12-hour and 24-hour formats.
L: Turns on the backlight
• Turning off Auto Display also returns to the default color
pattern.
To turn on Auto Display
Hold down C for about two seconds until the watch beeps.
• Note that Auto Display cannot be performed while a setting screen is on the display.
Auto Return Features
• If you leave the watch in the Telememo Mode for two or three minutes without
performing any operation, it automatically changes to the Timekeeping Mode.
• If you leave a screen with flashing digits or a cursor on the display 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 B and D buttons are used in various modes and setting screens to scroll
through data on the display. In most cases, holding down these buttons during a scroll
operation scrolls through the data at high speed.
Initial Screens
When you enter the Telememo or Alarm Mode, the data you were viewing when you
last exited the mode appears first.
Backlight Precautions
The backlight uses an EL (electro-luminescent) panel that causes the entire display to
glow for easy reading in the dark.
In any mode, press L to illuminate the display for about two seconds.
• The electro-luminescent panel that provides illumination loses power after very long
use.
• The illumination provided by the backlight may be hard to see when viewed under
direct sunlight.
• The watch may emit an audible sound whenever the display is illuminated. This is
due to vibration of the EL panel used for illumination, and does not indicate
malfunction.
• The backlight automatically turns off whenever an alarm sounds.
• Frequent use of the backlight shortens the battery life.
Character List
Stopwatch
The stopwatch lets you measure elapsed time, split times,
and two finishes.
• The display range of the stopwatch is 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.
1/100 second
Seconds
Minutes
Timekeeping
Mode time
Seconds
Minutes
Hours
Timekeeping
Mode time
Timekeeping Mode time
Dual time
To measure times with the stopwatch
Elapsed Time
Start
Stop Re-start Stop Clear
Start
Split Split release Stop Clear
Start
Split Stop Split release Clear
Split Time
Two Finishes
First runner
finishes.
Display time of
first runner.
(SPLIT displayed)
Second runner
finishes.
Display time of
second runner.
Countdown Timer
The countdown timer can be set within a range of
1 minute to 24 hours. An alarm sounds when the
countdown reaches zero.
• The initial default countdown start time when you
purchase the watch or after you have its battery
replaced is 5 minutes.
• Countdown timer functions are available in the
Countdown Timer Mode, which you enter pressing C.
To use the countdown timer
Press D while in the Countdown Timer Mode to start the
countdown timer.
• When the end of the countdown is reached, the alarm
sounds for 10 seconds or until you stop it by pressing
any button. The countdown time is automatically reset to
its starting value after the alarm stops.
• Press D while a countdown operation is in progress to pause it. Press D again to
resume the countdown.
• To completely stop a countdown operation, first pause it (by pressing D), and then
press B. This returns the countdown time to its starting value.
To set the countdown start time
1. In the Countdown Timer Mode, hold down A until the hour setting of the
countdown start time starts to flash, which indicates the setting screen.
2. Press C to move the flashing between the hour and minute settings.
3. While a setting is flashing, use D (+) and B (–) to change it.
• To set the starting value of the countdown time to 24 hours, set
0:00
.
4. Press A to exit the setting screen.
Dual Time
The Dual Time Mode lets you keep track of time in a
different time zone.
To set the Dual Time
1. Press C to enter the Dual Time Mode.
2. Use D, B, and A to set the Dual Time Mode time.
• Each press of D (+) and B (–) changes the time
setting in 30-minute increments.
• Pressing A sets the Dual Time Mode to the same time
as the Timekeeping Mode.