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Recovery Times
The table below shows the amount exposure that is required to take the
battery from one level to the next.
Approximate Exposure Time
Exposure Level
(Brightness)
Level 5 Level 4 Level 3
Outdoor Sunlight
3 hours
(50,000 lux)
Sunlight Through a
9 hours
Window (10,000 lux)
Daylight Through a
14 hours
Window on a Cloudy
Day (5,000 lux)
Indoor Fluorescent
155 hours
Lighting (500 lux)
• The above exposure time values are all for reference only. Actual required
exposure times depend on lighting conditions.
Reference
This section contains more detailed and technical information about watch
operation. It also contains important precautions and notes about the various
features and functions of this watch.
Graphic Area
The information shown in the graphic area depends on the current mode.
Graphic Area
Mode
Timekeeping
World Time
Alarm
Stopwatch
CountdownTimer
Button Operation Tone
The button operation tone sounds any time you
MUTE indicator
press one of the watch's buttons. You can turn the
button operation tone on and off as desired.
• Even if you turn off the button operation tone,
the alarms, the Hourly Time Signal, and the
countdown alarm all operate normally.
To turn the button operation tone on and off
1. In the Timekeeping Mode, hold down A until the display contents start to
flash. This is the setting screen.
2. Press C nine times to display the current button operation tone setting
(
or
).
3. Press D to toggle the button operation tone on (
4. Press A to exit the setting screen.
• The
indicator is displayed in all modes when the button operation tone
is turned off.
Power Saving Function
When turned on, the Power Saving function
Power saving on indicator
enters a sleep state automatically whenever the
watch is left in an area for a certain period where
it is dark. The table below shows how watch
functions are affected by the Power Saving
function.
Elapsed Time
Display
in Dark
60 to 70 minutes
Blank, with Power Saving on
indicator ( ) flashing
6 or 7 days
Blank, with Power Saving on
indicator ( ) displayed (not
flashing)
• Wearing the watch inside the sleeve of clothing can cause it to enter the
sleep state.
• The watch will not enter the sleep state between 6:00 AM and 9:59 PM. If
the watch is already in the sleep state when 6:00 AM arrives, however, it
will remain in the sleep state.
To recover from the sleep state
Perform any one of the following operations.
• Move the watch to a well-lit area.
• Press any button.
• Angle the watch toward your face for reading.
Operation Guide 3180
Level 2
Level 1
18 hours
5 hours
90 hours
24 hours
182 hours
49 hours
- - - - - - - -
- - - - - - - -
Graphic Area
Timekeeping Mode seconds
Timekeeping Mode seconds
Rotates when the time is reached
Stopwatch Mode 1/10 seconds
CountdownTimer Mode seconds
Rotates when the time is reached
) or off (
).
Operation
All functions enabled, except
for the display
Beeper tone, illumination,
and display are disabled.
To turn Power Saving on and off
1. In the Timekeeping Mode, hold down A until
the city code starts to flash, which indicates
the setting screen.
2. Press C eleven times until the Power Saving
on/off screen appears.
3. Press D to toggle Power Saving on (
off (
4. Press A to exit the setting screen.
On/Off status
• The Power Saving on indicator ( ) is displayed
in all modes while Power Saving is turned on.
Auto Return
If you do not perform any operation for about two or three minutes while a
setting screen (with a flashing setting) is on the display, the watch will exit the
setting screen automatically.
Scrolling
The B and D buttons are used in various modes and setting screens to
scroll through data on the display. In most cases, holding down these buttons
during a scroll operation scrolls at high speed.
Initial Screens
When you enter the World Time Mode, or Alarm Mode, the data you were
viewing when you last exited the mode appears first.
Timekeeping
• Resetting the seconds to 00 while the current count is in the range of 30 to
59 causes the minutes to be increased by 1. In the range of 00 to 29, the
seconds are reset to 00 without changing the minutes.
• The year can be set in the range of 2000 to 2099.
• The watch's built-in full automatic calendar 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 or
the battery drops to Level 5.
• The current time for all city codes in the Timekeeping Mode and World Time
Mode is calculated in accordance with the Coordinated Universal Time
(UTC) for each city, based on your Home City time setting.
World Time
The seconds count of the World Time is synchronized with the seconds count
of the Timekeeping Mode.
Illumination Precautions
• The electro-luminescent panel that provides illumination loses power after
very long use.
• Illumination may be difficult to see when viewed under direct sunlight.
• The watch may emit an audible sound whenever the display is illuminated.
This is due to vibration of the EL panel used for illumination, and does not
indicate malfunction.
• Illumination turns off automatically whenever an alarm sounds.
• Frequent use of illumination runs down the battery.
Auto light switch precautions
• Avoid wearing the watch on the inside of your wrist. Doing so causes the
auto light switch to operate when it is not needed, which shortens battery
life. If you want to wear the watch on the inside of your wrist, turn off the
auto light switch feature.
• Illumination turns off after a preset amount of time (1.5 or 3 seconds), even
if you keep the watch pointed toward your face.
• Static electricity or magnetic force can interfere with proper operation of the
auto light switch. If illumination does not turn on, try moving the watch back
to the starting position (parallel with the ground) and then tilt it back toward
you again. If this does not work, drop your arm all the way down so it hangs
at your side, and then bring it back up again.
• Under certain conditions, illumination may not turn on until about one
second after you turn the face of the watch toward you. This does not
necessarily indicate malfunction of the auto light switch.
• You may notice a very faint clicking sound coming from the watch when it is
shaken back and forth. This sound is caused by mechanical operation of
the auto light switch, and does not indicate a problem with the watch.
Specifications
Accuracy at normal temperature: ± 15 seconds a month
Timekeeping: Hour, minutes, seconds, p.m. (P), month, day, day of the week
Time format: 12-hour and 24-hour
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to
2099
Other: Home City code (can be assigned one of 48 city codes); Standard
Time / Daylight Saving Time (summer time)
World Time: 48 cities (31 time zones)
Other: Daylight Saving Time/Standard Time
Alarms: 5 daily alarms (four daily alarms; one snooze alarm); Hourly Time
Signal
Stopwatch:
Measuring unit: 1/100 second
Measuring capacity: 23:59' 59.99''
Measuring modes: Elapsed time, split time, two finishes
) and
).
5
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