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Operation Guide 5142
Things to check before using the watch
1. Press and hold the crown button (without unlocking the crown) for at
least two seconds to enter the Timekeeping Mode, and then observe the
movement of the x Second Hand.
Is the x Second Hand moving smoothly at one-second intervals?
NO
Is the x Second Hand moving at
two-second intervals or is it stopped
completely?
YES
Power is low. Charge the watch by placing
it in a location where it is exposed to light.
For details, see "Charging the Watch"
(page E-16).
E-10
Contents
E-2
About This Manual
E-3
Using the Crown
E-8
To disable crown button mode switching
E-9
To re-enable crown button mode switching
E-10 Things to check before using the watch
E-23
E-30
E-33
E-35
E-37 Mode Reference Guide
E-12
E-65
To perform an elapsed time operation
E-65
To pause at a split time
E-69 Using the Stopwatch (Stopwatch lap mode)
E-70
To enter and exit the Stopwatch Lap Mode
E-71
To perform an elapsed time operation
E-71
To perform lap time measurement
E-72
To recall lap data
E-73 Using the Countdown Timer
E-74
To specify the countdown start time
E-76
To perform a countdown timer operation
E-77
To stop the alarm
E-78 Using the Alarm
E-79
To change the alarm time setting
E-82
To check the AM/PM setting of the alarm
E-82
To turn the alarm on or off
E-14
Charging the Watch
The face of the watch is a solar panel that generates power from light. The generated
power charges a built-in rechargeable battery, which powers watch operations. The
watch charges whenever it is exposed to light.
Charging Guide
Whenever you are not
wearing the watch, be sure
to leave it in a location
where it is exposed to light.
Best charging
performance is achieved
by exposing the watch to
light that is as strong as
possible.
E-16
Power Levels
You can get an idea of the watch's power level by
observing the movement of the x Second Hand in the
Timekeeping Mode.
If the x Second Hand is moving normally at one-second
intervals, power is at Level 1.
If the x Second Hand is moving at two-second intervals,
power is at Level 2, which is quite low. Expose the watch
to light as soon as possible so it can charge.
Moves at two-second
intervals.
E-18
YES
The watch is charged suffi ciently.
For details about charging, see
"Charging the Watch" (page E-16).
NEXT
Go to step 2.
When wearing the watch,
makes sure that its face is
not blocked from light by the
sleeve of your clothing.
The watch may enter a
sleep state (page E-22) if
its face is blocked by your
sleeve even only partially.
2. Check the Home City and the daylight saving time (DST) settings.
Use the procedure under "To confi gure Home City settings" (page E-45) to confi gure
your Home City and daylight saving time settings.
Important!
Proper time calibration signal reception depends on correct Home City, time, and
date settings in the Timekeeping Mode. Make sure you confi gure these settings
correctly.
3. Set the current time.
To set the time using a time calibration signal
See "To get ready for a receive operation" (page E-30).
To set the time manually
See "Confi guring Current Time and Date Settings Manually" (page E-55).
The watch is now ready for use.
For details about the watch's radio controlled timekeeping feature, see "Radio
Controlled Atomic Timekeeping" (page E-24).
E-40
E-40
E-41
E-45
E-51
To toggle the Home City time between standard time and daylight
E-53
To manually override a time calibration standard time/daylight saving
E-55
E-59
E-65
E-82
E-84
E-86
E-86
E-89
E-105 Specifi cations
Warning!
Leaving the watch in bright light for charging can cause it to become quite hot.
Take care when handling the watch to avoid burn injury. The watch can become
particularly hot when exposed to the following conditions for long periods.
On the dashboard of a car parked in direct sunlight
Too close to an incandescent lamp
Under direct sunlight
Important!
Keep the watch in an area normally exposed to bright light when storing it for long
periods. This helps to ensure that power does not run down.
Storing the watch for long periods in an area where there is no light or wearing it in
such a way that it is blocked from exposure to light can cause power to run down.
Make sure that the watch is exposed to bright light whenever possible.
Level Hand Movement
1
Normal.
x x Second Hand moves at two-second intervals.
2
n n Day changes to 1 (home position).
x x Second Hand stopped.
z z Hour Hand and c c Minute Hand stopped at
3
12 o'clock.
When power drops to Level 3, all functions will be disabled but the watch will
continue to keep time internally for about one week. If you recharge the battery
suffi ciently during this period, the analog hands will move automatically to the
correct setting and regular timekeeping will resume. After one week, all settings
(including timekeeping) will be cleared. Recharging the battery will reset all settings
to their initial factory defaults.
E-11
E-13
E-15
E-17
Function Status
All functions enabled
Beeper, time calibration signal
reception, and countdown timer
operation disabled
All functions disabled
E-19
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