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USER’S GUIDE 2430
1
General Guide
• Press B to change from mode to mode.
• In any mode, press L to illuminate the display.
Timekeeping Mode
Countdown Timer Mode Stopwatch Mode Alarm Mode Dual Time Mode
Press .
To set the time and date
1.In the Timekeeping Mode, hold down A until the
seconds start to flash, which indicates the setting
screen.
2.Press B to move the flashing in the sequence shown
below to select other settings.
Minutes
Seconds
Hour
12/24-Hour
Format
Month YearDay
3. When the setting you want to change is flashing, press C to change it as
described below.
Timekeeping
Use the Timekeeping Mode to set and view the current time and date.
• In the Timekeeping Mode, hold down C to display the current month, day, and day
of the week. The current time will reappear when you release C.
Seconds
Day of week
Graphic (seconds)
Hour : Minutes
Month – Day
AM/PM/24H
indicator
Hold down .
Release .
SecondsMinutes
Graphic (minutes)
Mode indicator
• Pressing C while the seconds are in the range of 30 to 59 resets them to 00 and
adds 1 to the minutes. In the range of 00 to 29, the minutes are unchanged.
4. Press A to exit the setting screen.
• The day of the week is automatically displayed in accordance with the date (year,
month, and day) settings.
• The year can be set in the range of 2000 (
00) to 2039 (39).
• The watch’s built-in full automatic calendar automatically 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.
Countdown Timer
You can set the countdown timer within a range of 1 to 60
minutes. An alarm sounds and an alarm graphic flashes
when the countdown reaches zero.
• The initial default countdown start time when you
purchase the watch or after you have its battery
replaced is 45 minutes.
• The countdown operation continues even if you exit the
Countdown Timer Mode.
• All of the operations in this section are performed in the
Countdown Timer Mode, which you enter by pressing
B.
To change this setting
Seconds
Hour, Minutes, Year, Month, Day
12/24-Hour Format
Perform this button operation
Press C to reset to
00
.
Press C to increase the setting.
Press C to toggle between 12-hour (AM or PM)
and 24-hour (24H) timekeeping.
To use the countdown timer
Press C while in the Countdown Timer Mode to start the countdown timer.
• When the end of the countdown is reached, the alarm sounds and an alarm graphic
flashes 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 C while a countdown operation is in progress to pause it. Press C again to
resume the countdown.
• To completely stop a countdown operation, first pause it (by pressing C), and then
press A. 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 minute setting of the
countdown start time starts to flash, which indicates the setting screen.
2. Press C to increase the setting.
3. Press A to exit the setting screen.
Stopwatch
The stopwatch lets you measure elapsed time, split times, and two finishes.
Minutes
Seconds
1/100 Second
Mode indicator Hours
Minutes
Seconds
Split indicator
[Up to 60 minutes] [After 60 minutes]
• The display range of the stopwatch is 23 hours, 59 minutes, 59 seconds. Time is
measured in 1/100-second increments up to the first 60 minutes, and in 1-second
increments after 60 minutes.
• 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 elasped time measurement.
• All of the operations in this section are performed in the Stopwatch Mode, which you
enter by pressing B.
To measure times with the stopwatch
Elapsed Time
Start
Stop Re-start Stop Clear
Start
Split
(Split indicator
displayed)
Split release Stop Clear
Start
Split Stop Split release Clear
Split Time
Two Finishes
First runner
finishes.
Display time of
first runner.
Second runner
finishes.
Display time of
second runner.
Alarms
You can set five independent Daily Alarms. When an
alarm is turned on, the alarm tone sounds and an alarm
graphic flashes when the time is reached.
When the Hourly Time Signal is turned on, the watch
beeps every hour on the hour.
• Pressing C in the Alarm Mode cycles through the five
alarm screens (which show the alarm time and alarm
number) and the hourly time signal screen (which
shows :00).
• The five alarms are identified by alarm numbers1
through 5.
• An alarm setting (and an Hourly Time Signal setting) is
available in the Alarm Mode, which you enter by
pressing B.
To set an alarm time
1.In the Alarm Mode, use C to select the alarm whose
time you want to set.
Hourly
Time Signal
Alarm 4
Alarm 5
Alarm 1
Alarm 2 Alarm 3
2.After you select an alarm, hold down A until the hour
setting of the alarm time starts to flash, which indicates
the setting screen.
• At this time, the alarm is turned on automatically.
Alarm on indicator
Alarm number
Hour : Minutes
Mode indicator
3. Press B to move the flashing between the hour and minutes.
4. While a setting is flashing, press C to increase it.
• When setting the alarm time using the 12-hour format, take care to set the time
correctly as a.m (AM) or p.m. (PM).
5. Press A to exit the setting screen.