E-8
E-75 Checking the Current Time in a Different Time Zone
E-75 To enter the World Time Mode
E-75 To view the time in another time zone
E-76 To specify standard time or daylight saving time (DST) for a city
E-77 Using
E-77 To enter the Stopwatch Mode
E-77 To perform an elapsed time operation
E-77 To pause at a split time
E-78 To measure two fi
E-79 Using the Countdown Timer
E-79 To enter the Countdown Timer Mode
E-79 To specify the countdown start time
E-80 To perform a countdown timer operation
E-80 To stop the alarm
E-81 Using
E-81 To enter the Alarm Mode
E-82 To set an alarm time
E-83 To turn an alarm and the Hourly Time Signal on and off
E-83 To stop the alarm
E-9
E-84 Looking up Sunrise and Sunset Times
E-84 To view sunrise and sunset times
E-85 To view the sunrise/sunset time for a particular date
E-86 To look up the sunrise and sunset times for a specifi
E-88 Illumination
E-88 To turn on illumination manually
E-88 To change the illumination duration
E-90 To turn the auto light switch on and off
E-92 Other
E-92 To turn the button operation tone on and off
E-93 To turn Power Saving on or off
E-94 Troubleshooting
E-100 Specifi cations
E-10
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, leave it in a location where it
is exposed to light.
• Best charging performance is
achieved by exposing the watch to
the strongest light available.
When wearing the watch, make sure
that its face is not blocked from light
by the sleeve of your clothing.
• The watch may enter a sleep state
(page E-14) if its face is blocked
by your sleeve even only partially.
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
E-11
Important!
• Allowing the watch to become very hot can cause its liquid crystal display to black out. The
appearance of the LCD should become normal again when the watch returns to a lower temperature.
• Turn on the watch’s Power Saving function (page E-14) and keep it 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. Expose the watch to bright light
whenever possible.
Power Levels
You can get an idea of the watch’s power level by observing the battery power indicator on the display.
Important!
• If low battery power is indicated, expose the face of the watch to direct light to charge. At Level 5, the
battery is dead, which causes watch functions to stop, all data in watch memory to be deleted, and all
watch settings to return to their initial factory defaults.
Level Battery Power Indicator Function Status
1
(H)
All functions enabled.
2
(M)
All functions enabled.
Battery power
indicator
Battery power
indicator
E-12
Level Battery Power Indicator Function Status
3
(L)
l
Auto and manual receive, illumination,
beeper, and sensor operation disabled.
4
(CHG)
Except for the
CHG
(charge) indicator, all
functions and display indicators disabled.
5 – – – All functions disabled.
• The fl
LOW
indicator at Level 3 (L) tells you that battery power is very low, and that exposure to
bright light for charging is required as soon as possible.
• Display indicators reappear as soon as the battery is charged from Level 5 to Level 2 (M).
• Leaving the watch exposed to direct sunlight or some other very strong light source can cause the
battery power indicator to show a reading temporarily that is higher than the actual battery level. The
correct battery level should be indicated after a few minutes.
E-13
Power Recovery Mode
• Performing multiple sensor, illumination, or beeper operations during a short period may cause all of
the battery power indicators (H, M, and L) to start fl
is in the power recovery mode. Illumination, alarm, countdown timer alarm, hourly time signal, and
sensor operations will be disabled until battery power recovers.
• Battery power will recover in about 15 minutes. At this time, the battery power indicators (H, M, L) will
stop fl
• If all of the battery power indicators (H, M, L) are fl
CHG
(charge) indicator also is
fl
• Even if battery power is at Level 1 (H) or Level 2 (M), the Digital Compass Mode, Barometer/
Thermometer Mode, or Altimeter Mode sensor may be disabled if there is not enough voltage available
to power it suffi
• Frequent fl
power is low. Leave the watch in bright light to allow it to charge.
Charging Times
Exposure Level (Brightness)
Daily
Operation
*1
Level Change *2
Level 5 Level 4 Level 3 Level 2 Level 1
Outdoor sunlight (50,000 lux) 5 min. 2 hours 16 hours 5 hours
Sunlight through a window (10,000 lux)
24 min. 7 hours 79 hours 22 hours
Daylight through a window on a
cloudy day (5,000 lux)
48 min. 12 hours 160 hours 43 hours
Indoor fl 8 hours 175 hours – – – – – –
E-14
*1 Approximate amount of exposure time required each day to generate enough power for normal daily
operation.
*2 Approximate amount of exposure time (in hours) required to take power from one level to the next.
• The above exposure times all are for reference only. Actual exposure times depend on lighting
conditions.
• For details about the operating time and daily operating conditions, see the “Power Supply” section of
the Specifi
Power Saving
When turned on, Power Saving enters a sleep state automatically whenever the watch is left for a certain
period in an area where it is dark. The table below shows how watch functions are affected by Power
Saving.
• For information about enabling and disabling power saving, see “To turn Power Saving on or off” (page
E-93).
• There actually are two sleep state levels: “display sleep” and “function sleep”.
Elapsed Time in Dark Display Operation
60 to 70 minutes (display sleep) Blank, with
PS
fl Display is off, but all functions are enabled.
6 or 7 days (function sleep) Blank, with
PS
not fl
All functions are disabled, but timekeeping is
maintained.
• The watch will not enter a sleep state between 6:00 AM and 9:59 PM. If the watch is already in a sleep
state when 6:00 AM arrives, however, it will remain in the sleep state.
• Power Saving is enabled only when the watch is in the Timekeeping Mode with the Day of the Week
screen displayed (page E-29) or in the World Time Mode (page E-75).
To recover from the sleep state
Move the watch to a well-lit area, press any button, or angle the watch towards your face for reading (page E-89).
E-15
Radio Controlled Atomic Timekeeping
This watch receives a time calibration signal and updates its time setting accordingly. However, when
using the watch outside of areas covered by time calibration signals, you will have to adjust the settings
manually as required. See “Confi
information.
This section explains how the watch updates its time settings when the city code selected as the Home
City is in Japan, North America, Europe, or China, and is one that supports time calibration signal
reception.
If your Home City Code setting is this:
The watch can receive the signal from the transmitter
located here:
LIS, LON, MAD, PAR, ROM, BER, STO, ATH, MOW Anthorn (England), Mainfl
HKG, BJS Shangqiu City (China)
TPE, SEL, TYO Fukushima (Japan), Fukuoka/Saga (Japan)
HNL, ANC, YVR, LAX, YEA, DEN, MEX, CHI, NYC, YHZ,
YYT
Fort Collins, Colorado (United States)
Important!
• The areas covered by
MOW
,
HNL
and
ANC
are quite far from the calibration signal transmitters, so
certain conditions may cause reception problems.
• When
HKG
or
BJS
is selected as the Home City, only the time and date are adjusted according to the
time calibration signal. You need to switch manually between standard time and daylight saving time
(DST) if required. See “To confi
about how to do this.
Operation Guide 3410
