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Battery Power Indicator and Recover Indicator
The battery power indicator on the display shows you the current status of the
rechargeable battery's power.
Level
Battery Power Indicator
1
2
3
l
Battery power
indicator
(Charge Soon Alert)
4
c
5
• The flashing
LOW
indicator at Level 3 tells you that battery power is very
low, and that exposure to bright light for charging is required as soon as
possible.
• At Level 5, all functions are disabled and settings return to their initial
factory defaults. Once the battery reaches Level 2 after falling to Level 5,
reconfigure the current time, date, and other settings.
• The watch's Home City code setting will change automatically to TYO
(Tokyo) whenever the battery drops to Level 5. With this Home City code
setting, the watch is configured to receive the time calibration signals of
Japan. If you are using the watch in North America, Europe, or China you
will need to change the Home City code setting to match your location
whenever the battery drops to Level 5.
• Display indicators reappear as soon as the battery is charged from Level 5
to Level 2.
• 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.
• Performing illumination, or beeper operations
during a short period may cause
(recover) to appear on the display. Illumination,
alarm, countdown timer alarm, and hourly time
signal will be disabled until battery power
recovers.
After some time, battery power will recover and
Recover indicator
the above functions are enabled again.
• If
(recover) appears frequently, it probably means that remaining
battery power is low. Leave the watch in bright light to allow it to charge.
Charging Precautions
Certain charging conditions can cause the watch to become very hot. Avoid
leaving the watch in the areas described below whenever charging its
rechargeable battery.
Also note that 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.
Warning!
Leaving the watch in bright light to charge its rechargeable battery 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
Charging Guide
After a full charge, timekeeping remains enabled for up to about seven months.
• The following table shows the amount of time the watch needs to be
exposed to light each day in order to generate enough power for normal
daily operations.
Exposure Level (Brightness)
Outdoor Sunlight (50,000 lux)
Sunlight Through a Window (10,000 lux)
Daylight Through a Window on a Cloudy Day (5,000 lux)
Indoor Fluorescent Lighting (500 lux)
• Since these are the specs, we can include all the technical details.
• Watch not exposed to light
• Internal timekeeping
• Display on 18 hours per day,sleep state 6 hours per day
• 1 illumination operation(1.5 second) per day
• 10 seconds of alarm operation per day
• Measurement of 26 Rally Mode stages per month
• Stable operation is promoted by frequent exposure to light.
Operation Guide 3153
Function Status
All functions enabled.
All functions enabled.
Illumination and beeper
disabled.
Except for timekeeping and
the C (charge) indicator, all
functions and display
indicators disabled.
All functions disabled.
(recover) will disappear, indicating that
Approximate
Exposure Time
5 minutes
24 minutes
48 minutes
8 hours
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
2 hours
(50,000 lux)
Sunlight Through a
6 hours
Window (10,000 lux)
Daylight Through a
12 hours
Window on a Cloudy
Day (5,000 lux)
Indoor Fluorescent
127 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.
Mode
Graphic Area
Timekeeping Mode
Rally Mode
Recall Mode
World Time Mode
Alarm Mode
Stopwatch Mode
CountdownTimer
Mode
Button Operation Tone
The button operation tone sounds any time you
press one of the watch's buttons. You can turn the
button operation tone on or off as desired.
• Even if you turn off the button operation tone,
the alarms, the Hourly Time Signal, the
countdown alarm, and Rally Mode auto start all
operate normally.
To turn the button operation tone on and off
In any mode (except when a setting screen is on the display), hold down C
to toggle the button operation tone on (
• Holding down C to turn the button operation tone on or off also causes the
watch's current mode to change.
• 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 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
indicator (PS) flashing
6 or 7 days
Blank, with Power Saving
indicator (PS) 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 towards your face for reading.
Level 2
Level 1
28 hours
8 hours
139 hours
39 hours
283 hours
78 hours
- - - - - - - -
- - - - - - - -
Graphic Area
Timekeeping Mode seconds
Target time number/Measurement
time 1/10 seconds during
measurement
Record number
Timekeeping Mode seconds
No indication
Stopwatch Mode 1/10 seconds
CountdownTimer Mode seconds
not displayed) and off (
displayed).
Operation
All functions enabled, except
for the display
Beeper tone, illumination,
and display are disabled.
6
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