Module No. 2178 2178-1
GENERAL GUIDE
•Press Cto change from mode to mode.
•After you perform an operation in any mode, pressing Creturns to the Timekeeping Mode.
•If you do not press any button for a few minutes while making settings in any mode (indicated when settings are flashing), the watch automatically clears the setting screen (settings stop
flashing) and returns to the normal display for the mode you are in.
•This watch returns to the Timekeeping Mode whenever you hold down the Cbutton for one or two seconds. If you ever lose track of what mode you are in or what you should do next,
hold down Cto return to normal timekeeping.
•In any mode press Lto illuminate the display.
Stopwatch Mode Alarm Mode Dual Time ModeTimekeeping Mode Countdown Alarm Mode
Press C.
TIMEKEEPING MODE
To set the time and date
1.Hold down Awhile in the Timekeeping Mode until the
seconds digits flash on the display because they are
selected
.
2.Press Cto change the selection in the following se-
quence.
Seconds
Day
Minutes
12/24-Hour Format
Hour
Day of week Month
3.While the seconds digits are selected (flashing), press Dto reset the seconds to
00. If you press Dwhile 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.
•While the 12/24-hour format setting is selected, press Dor Bto toggle it between
12 and 24.
•While the day of the week is selected (flashing), press Dto advance to the next
day or Bto return to the previous day.
4.While any other digits (beside seconds) are selected (flashing), press Dto in-
crease the number or Bto decrease it.
•Except for when adjusting the seconds or setting the 12/24-hour format, holding
down a button changes the current selection at high speed.
•When the 12-hour format is selected, the indicator Pappears on the display to
indicate “P.M.” times. There is no indicator for “A.M.” times.
•When the 24-hour format is selected, the indicator 24 appears on the display.
5.After you set the time and date, press Ato return to the Timekeeping Mode.
ABOUT THE BACKLIGHT
•Press Lto illuminate the display for about 2 seconds.
•The backlight of this watch employs an electro-luminescent (EL) light, which loses
its illuminating power after very long term use.
•Frequent use of the backlight shortens the battery life.
•The watch emits an audible sound whenever the display is illuminated. This does
not indicate malfunction of the watch.
•The illumination provided by the backlight may be hard to see when viewed under
direct sunlight.
•The backlight automatically turns off whenever an alarm sounds.
COUNTDOWN ALARM MODE
The countdown alarm can be set within a range of 1 sec-
ond to 24 hours. When the countdown reaches zero, an
alarm sounds for 10 seconds or until you press any but-
ton.
To set the countdown start time
1. Hold downAwhile in the Countdown Alarm Mode. The
hours digits flash on the display because they are
se-
lected.
2.Press Cto change the selection in the following se-
quence.
Hour Minutes Seconds
3.Press Dto increase the selected number or Bto decrease it. Holding down
either button changes the selection at high speed.
•Press Dand Bat the same time to clear the starting time to 0:00' 00".
•To set the starting value of the countdown time to 24 hours, set 0:00' 00".
4.After you set the countdown start time, press Atwice to return to the Countdown
Alarm Mode.
Minutes
Seconds
Day
Day of week
PM indicator
Hour
Month
Mode indicator
Hours
Seconds
Minutes
1/10
second
Auto repeat
on indicator
Progress beeper
on indicator
To use the countdown alarm
1.Press Dwhile in the Countdown Alarm Mode to start the countdown alarm.
2.Press Dagain to stop the countdown alarm.
•You can resume countdown alarm operation by pressing D.
3.Stop the countdown alarm and then press Bto reset the countdown time to its
starting value.
•When the end of the countdown is reached and auto repeat timing is off, the alarm
sounds for 10 seconds or until you stop the alarm by pressing any button. Count-
down timing stops and the countdown time is automatically reset to its starting
value after the alarm stops.
To switch auto repeat timing and the progress beeper on and off
1.Hold down Awhile in the Countdown Alarm Mode. The hour digits flash on the
display because they are
selected
. Press Aagain to move the flashing to the
auto repeat ON/OFF setting.
2.Press Dor Bto toggle auto repeat on ( ) and off.
3.Press Cto move the flashing to the progress beeper ON/OFF setting.
4.Press Dor Bto toggle the progress beeper on (
) and off.
5.Press Ato return to the Countdown Alarm Mode.
•When the end of the countdown is reached while auto repeat is on, the alarm sounds,
but the countdown restarts from the beginning without stopping. You can stop the
countdown by pressing Dand manually reset to the start time by pressing B.
•If you set a starting time of 10 seconds or less and have Auto Repeat turned on, the
countdown alarm tone (which normally sounds for 10 seconds) sounds for only one
second.
•When the progress beeper is turned on, the watch beeps as the countdown time
passes the 10, 5, 4, 3, 2, and 1-minute marks, and the 50, 40, 30, 20, 10, 5, 4, 3, 2,
and 1-second marks.
STOPWATCH MODE
The Stopwatch Mode lets you measure elapsed time, split
times, and two finishes. The range of the stopwatch is 23
hour, 59 minutes, 59.99 seconds. You can also have an
alarm sound when a target time is reached. The Stop-
watch Mode also features an Auto-Start function.
(a) Elapsed time measurement
Start Stop Re-start Stop Clear
Start Split Split release Stop Clear
Start Split Stop Split release Clear
(b) Split time measurement
(c) Split time and 1st-2nd place times
First runner
finishes. Second runner
finishes.
Record time of
first runner.
Record time of
second runner.
Mode indicator
1/100 second
Minutes
Seconds
Hours
Target time on indicator
About the Auto-Start function
With the Auto-Start function, the watch performs a 5-second countdown. When the
countdown reaches zero, stopwatch operation starts automatically. During the final
three seconds of the countdown, a beeper sounds with each second.
To turn the Auto-Start function on and off
While the display is showing all zeros in the Stopwatch Mode, press Bto toggle it on
and off.
•The indicator AUTO-ST appears and 05 is shown in the upper display while Auto-
Start is turned on. The AUTO-ST indicator is not shown and the upper part of the
display shows the current time when Auto-Start is turned off.
•To stop the Auto-Start countdown and return to all zero display, press B.
•Pressing Dwhile the Auto-Start countdown is in progress immediately starts the
stopwatch.
