Operation Guide 2790
Stopwatch
Analog TimekeepingMinutes Seconds The stopwatch lets you measure elapsed time.
The analog time of this watch is synchronized with the digital time. The analog time" The display range of the stopwatch is 59 minutes,
setting is adjusted automatically whenever you change the digital time.59.99 seconds.
" The stopwatch continues to run, restarting from zero
Noteafter it reaches its limit, until you stop it.
" After you manually change the digital time setting, the hands of the analog timepiece" The stopwatch measurement operation continues even
move clockwise to adjust to the new setting. If the analog time does not match theif you exit the Stopwatch Mode.
digital time for any reason, use the procedure described under OTo adjust the analog" All of the operations in this section are performed in the
time� to match the analog setting to the digital setting.
1/100 second " Alarms, the Hourly Time Signal, and the display illumination are all disabled whileStopwatch Mode, which you enter by pressing B.
the analog hands are moving.Mode indicator
" Whenever you need to manually adjust both the digital and the analog time settings,To measure times with the stopwatch
make sure you adjust the digital setting first.
" Depending on how much the hands have to move in order to adjust to the digitalElapsed time
time, it may take some time before the analog hands stop moving.
StartStopRe-startStopClear
To adjust the analog time
1.In the Timekeeping Mode, press B four times to enter
the Hand Setting Mode.
2.Hold down A until the current digital time starts toDual Time
flash, which indicates the analog setting screen.
" Note that you will not be able to change to the settingDual Time Mode lets you keep track of a time in a different time zone.
screen if the analog hands are moving because the" In the Dual Time Mode, the seconds count is synchronized with the seconds count
watch is automatically adjusting the analog time toof the current digital time.
match the digital time. If this happens, wait until theHour : Minutes
hands stop moving.To set the Dual Time
" The hour hand and minute hand of the watch do not1.Press B to enter the Dual Time Mode.
move while the setting screen is on the display.2.Hold down A until the hour setting starts to flash,
3.Press C to advance the analog time setting bywhich indicates the setting screen.
20 seconds.3.Press B to move the flashing between the hour and
" Holding down C advances the analog time setting atminutes settings.
high speed.4.Press C to increase the setting.
" If you need to advance the analog time a long way, press C and L at the same5.Press A to exit the setting screen.
Seconds
time. This locks the high speed hand movement, so you can release the two
buttons. High-speed hand movement continues until you press any button. It willMode indicator
also stop automatically after the time advances 12 hours or if an alarm (daily
alarm or Hourly Time Signal) starts to sound.
4. Press A to exit the setting screen.Display Illumination
" To return to the Timekeeping Mode, press B.
An LED (light-emitting diode) and a light guide panel
illuminate the display for easy reading in the dark. The
AlarmwatchOs auto light switch automatically turns on display
illumination when you angle the watch for reading in the
Alarm timeWhen the daily alarm is turned on, the alarm tone soundsdark.
(Hour : Minutes) when the alarm time is reached." The auto light switch must be turned on (indicated by
You can also turn on an Hourly Time Signal that causesthe auto light switch indicator) for it to operate.
the watch to beep twice every hour on the hour." See OIllumination Precautions� for more important
" Alarm setting (and Hourly Time Signal setting) isinformation.
available in the Alarm Mode, which you enter byThree-second
pressing B.indicator
Auto light switch indicator
Alarm Operation
The alarm tone sounds at the preset time for 10 seconds,
Mode indicator regardless of the mode the watch is in.To illuminate the display
In any mode, press L to turn on illumination.
" Note that the alarm does not sound while the analog
" The above operation turns on illumination regardless of the current auto light switch
hands are in motion to adjust in accordance with asetting.
change made to the digital time setting in the
" You can use the procedure below to select either one second or three seconds as
Timekeeping Mode.
the illumination duration. When you press L, the illumination will remain on for
about one second or three seconds, depending on the current illumination duration
To set an alarm time
setting.
1.In the Alarm Mode, hold down A until the hour setting
starts to flash, which indicates the setting screen.To specify the illumination duration
" This operation automatically turns on the alarm.
1. In the Timekeeping Mode, hold down A until the seconds start to flash, which
2.Press B to move the flashing between the hour and
indicates the setting screen.
minutes.2. While the seconds are flashing, press L to toggle the illumination duration
3.While a setting is flashing, use C to increase it.
between three seconds (3" displayed) and one second (3" not displayed).
" With the 12-hour format, set the time correctly as a.m.
3. Press A to exit the setting screen.
(A indicator) or p.m. (P indicator)." When the three-second setting is selected, the three-second (3") indicator remains
4.Press A to exit the setting screen.
on the display in all modes.
To stop the alarm tone after it starts to soundAbout the Auto Light Switch
Press any button.While the auto light switch is enabled, illumination turns on for about one second or
three seconds, whenever you position your wrist as described below in any mode.
To turn the Daily Alarm and Hourly Time Signal on and offNote that this watch features a OFull Auto Light,� so the auto light switch operates only
In the Alarm Mode, press C to cycle through the on andwhen available light is below a certain level. Illumination does not turn on under bright
Alarm on indicator off settings as shown below.
light.
Alarm On Indicator/Hourly Time Signal On Indicator" Be sure to wear the watch on the outside of your wrist while using the auto light
switch.
Moving the watch to a position that is parallel to the ground and then tilting it
Both onBoth offDaily alarm Hourly Time towards you more than 40 degrees causes illumination to turn on.
onlySignal only
Hourly time signal" The alarm on () indicator flashes while the alarm isParallel to groundMore than 40°
on indicator sounding.
" The alarm on () indicator and Hourly Time Signal on
( ) indicator are displayed in all modes.
To test the alarmWarning!
In the Alarm Mode, hold down C to sound the alarm." Always make sure you are in a safe place whenever you are reading the watch
using the auto light switch. Be especially careful when running or engaged in
any other activity that can result in accident or injury. Also take care that
sudden illumination by the auto light switch does not surprise or distract
others around you.
" 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 L for about two seconds to toggle the auto light
switch on ( displayed) or off ( not displayed).
" The auto light switch is automatically turned off whenever battery power is at Level
3. After battery power recovers to Level 2, you will have to perform the above
procedure to turn the auto light switch back on again.
" The auto light switch indicator () is on the display in all modes while the auto
light switch is turned on.
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ACEC
