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• The flashing charge indicator (CHG) 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 4, all functions are disabled and settings return to their initial factory
defaults. Functions are enabled once again after the rechargeable battery is
charged, but you need to set the time and date, after the battery reaches Level 2
after dropping to Level 4.
• Leaving the watch in direct sunlight or some other very strong light source can cause
the battery power indicator to temporarily show a reading that is higher than the actual
battery level. The correct battery power indicator should appear after a few minutes.
• If you use the light or alarms a number of times during a short period, the
RECOVER indicator appears on the display and the following operations become
disabled until battery power recovers.
Illumination
Beeper tone
Time calibration signal reception
After some time, battery power will recover and the RECOVER indicator will
disappear, indicating that the above functions are enabled again.
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 7 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.
• Display on 18 hours per day, sleep state 6 hours per day
• 1 illumination operation (1.5 seconds) per day
• 10 seconds of alarm operation per day
• 5 times calibration reception per day
• Stable operation is promoted by frequent charging.
Recovery Times
The table below shows the amount exposure that is required to take the battery from
one level to the next.
Exposure Level
Approximate Exposure Time
(Brightness)
Level 4
Outdoor Sunlight (50,000 lux)
1 hour
Sunlight Through a Window
5 hours
(10,000 lux)
Daylight Through a Window
10 hours
on a Cloudy Day (5,000 lux)
Indoor Fluorescent Lighting
94 hours
(500 lux)
• The above exposure time values are all for reference only. Actual required exposure
times depend on lighting conditions.
Timekeeping
Use the Timekeeping Mode to set and view the current time and date. This section
also explains how to manually set the current date and time.
• When setting the time, you can also configure settings for the illumination duration,
the 12/24-hour format, and power saving on/off.
• All of the operations in this section are performed in the Timekeeping Mode, which
you can enter by pressing C.
DST indicator Hour : Minutes
PM indicator
Seconds
Press D.
Day of week
Month – Day
Setting the Time and Date Manually
Make sure you select your Home City code before you change the current time and
date settings. World Time Mode times are all displayed in accordance with the
Timekeeping Mode settings. Because of this, World Time Mode times will not be
correct if you do not select the proper Home City code before setting the time and
date in the Timekeeping Mode.
To set the current time and date manually
1. In the Timekeeping Mode, hold down A until the city
code starts to flash, which indicates the setting screen.
2. Use A or C to move the flashing in the sequence
shown below to select other settings.
City code
Approximate Exposure Time
5 minutes
24 minutes
48 minutes
8 hours
Level 3
Level 2
Level 1
12 hours
6 hours
60 hours
28 hours
– – –
– – –
Received time
(Hour : Minutes)
Received date
(Month – Day)
Last Signal Screen
— 5 —
Press C .
Transmitter/
C
City Settings
City Code
A
Time/Date
C
12/24-Hour
Settings
Seconds
Format
Power
Saving
3. When the setting you want to change is flashing, use B and/or D to change it as
described below.
Transmitter/City Settings
Screen:
To do this:
Change the city code
Toggle between Daylight Saving
ON
Time (
) , Standard Time (
A
or Auto DST (
)
Toggle between auto receive on
(
) and off (
)
On
OFF
• See "City Code Table" for a complete list of available city codes.
Time/Date Settings
Screen:
To do this:
Toggle between 12-hour (
12H
24-hour (
24H
) timekeeping
Reset the seconds to 00
Toggle the illumination duration
setting between 1.5 seconds (
and 2.5 seconds ( )
Change the hour or minutes
Change the month, day or year
Toggle Power Saving on (
On
off (
)
OFF
• For information about settings other than the time and date, see the following.
Illumination duration: Illumination
Power Saving: Power Saving Function
4. Use A to exit the setting screen.
• If a Transmitter/City Setting screen is displayed, press A twice.
• If a Time/Date Setting screen is displayed, press A once.
Note
• Auto DST (
A
BER
) can be selected only while
as the Home City code. For more information, see "Daylight Saving Time (DST)"
below.
• The auto receive setting is used for time calibration signal reception only. See "About
Auto Receive" for details.
Daylight Saving Time (DST)
Daylight Saving Time (summer time) advances the time setting by one hour from
Standard Time. Remember that not all countries or even local areas use Daylight
Saving Time.
The time calibration signal transmitted from Mainflingen includes both Standard Time
and DST data. When the Auto DST setting is turned on, the watch switches between
Standard Time and DST (summer time) automatically in accordance with the
Mainflingen signal.
• The default DST setting is Auto DST (
A
) whenever you select
ATH
or
as your Home City code.
• If you experience problems receiving the time calibration signal in your area, it is
probably best to switch between Standard Time and Daylight Saving Time (summer
time) manually.
To change the Daylight Saving Time (summer time) setting
1. In the Timekeeping Mode, hold down A until the city code starts to flash, which
indicates the setting screen.
2. Press C once to display the DST setting screen.
3. Use D to cycle through the DST settings in the sequence shown below.
Auto DST (
A
)
DST off (
OFF
4. When the setting you want is selected, press A twice to exit the setting screen.
• The DST indicator appears on the display to indicate that Daylight Saving Time is
turned on.
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.
Power Saving Function
When turned on, the Power Saving function automatically enters a sleep state
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 the Power Saving function.
Elapsed Time
Display
in Dark
Blank, with
60 to 70 minutes
Display is off, but all functions are enabled.
PS flashing
6 or 7 days
Blank, with
All functions are disabled, but timekeeping
PS not flashing
is maintained.
• Wearing the watch inside the sleeve of clothing can cause it to enter the sleep state.
• The watch will not enter the sleep state while the Timekeeping Mode time is
between 6:00 AM and 9:59 PM. If the watch is already in the sleep state when the
time reaches 6:00 AM, however, it will remain in the sleep state.
• The watch will not enter the sleep state while it is in the Stopwatch Mode.
/ Press A.
Auto
DST
Receive
Hour
Minutes
Day
Month
Year
Do this:
Use D (east) and B (west).
Press D.
OFF
),
Press D.
Do this:
Press D.
) and
Press D.
Press B.
)
Use D (+) and B (–).
Use D (+) and B (–).
Press D.
) and
PAR
LON
ATH
,
,
, or
is selected
BER
,
PAR
,
LON
,
)
DST on (
ON
)
Operation
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