Operation Guide 5184
Battery Power Indicator and Power Recovery Mode indicator
The battery power indicator indicates you the current status of the rechargeable
Battery Power Indicator
(Charge Soon Alert)
Overuse of display illumination or the beeper can cause
the R (Recover) indicator to appear in the upper display,
which indicates that the watch is in the battery power
recovery mode. Face illumination, the alarm, the
countdown timer alarm, and all hand operations are
disabled in the power recovery mode. The watch
continues to keep time internally, so normal timekeeping
and function will resume as soon as battery power
recovers to normal levels, which is indicated when the R
If R appears frequently, it probably means that
remaining battery power is low. Leave the watch in bright
light for some time to allow it to charge.
After a full charge, timekeeping remains enabled for up to about eight 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)
For details about the battery operating time and daily operating conditions, see the
"Power Supply" section of the Specifications (page E-56).
Stable operation is promoted by frequent exposure to light.
Hand Home Position Correction
The hands of the watch can be thrown off by exposure to strong magnetism or impact.
If that happens, check if the home positions of the hands are correct and adjust the
home positions as required.
To adjust the home positions
1. In the Timekeeping Mode, hold down D for about three
seconds, until H-SET appears on the upper display.
The dial hands are in their correct home positions
when the left dial hand moves to C (CHG) and the
right dial hand moves to 12. If they don't, use B to
adjust the left dial hand position and D to adjust the
right dial hand position.
2. After confirming that both dial hands are in their correct
home positions, press C.
Correct dial hand
This will change to hour hand and minute hand home
position manual correction.
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.
Power Saving Function
When turned on, the Power Saving function 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
All functions enabled.
All functions enabled.
Illumination and beeper
Except for timekeeping, all
functions and display
All functions disabled.
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.
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.
The table below shows the amount exposure that is required to take the battery from
one level to the next.
Sunlight Through a
Window (10,000 lux)
Daylight Through a
Window on a Cloudy
Day (5,000 lux)
Lighting (500 lux)
60 to 70 minutes
To recover from the sleep state
Perform any one of the following operations.
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.
At Level 5 (CHG), all functions are disabled and settings return to their initial factory
defaults. Once the battery reaches Level 2 (M) after falling to Level 5 (CHG),
reconfigure the current time, date, and other settings.
Display indicators reappear as soon as the battery is charged from Level 5 (CHG) to
Level 2 (M).
The watch's Home City code setting will change automatically to TYO (Tokyo)
whenever the battery drops to Level 5 (CHG). If this happens, change the Home City
to the setting you want (page E-11).
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
On the dashboard of a car parked in direct sunlight
Too close to an incandescent lamp
Under direct sunlight
Approximate Exposure Time
The above exposure time values are all for reference only. Actual required exposure
times depend on lighting conditions.
The hour and minute hands are in their correct home
positions if they are at 12 o'clock. If they are not, use
D (+) and B (–) to adjust their positions as required.
Pressing C here will return to the setting at the
beginning of step 2.
3. After everything is the way you want, press A to return
to the Timekeeping Mode.
Correct hour and
Hands and Display
Left dial hand: PS; Right dial
hand: "12"; Other hands:
Normal; Display: Blank
6 or 7 days
Left dial hand: PS; Other hands:
Stopped at 12 o'clock;
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
Move the watch to a well-lit area.
Press any button.
Angle the watch towards your face for reading (page E-36).
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All functions enabled, except
Beeper tone, illumination, and