• The display will automatically revert to the Timekeeping screen if you leave the Battery Level, Alarm, or Hand Setting screen displayed
without performing any operation for about two or three minutes.
CC
C button sounds a confirmation tone and cycles through available modes in the sequence shown below.
CC
Timekeeping Mode
Button Button
Button Button
(Mode switching)
Calendar Screen
Month.
Day
PM indicator
(no indicator for AM)
Hour
Minutes
2-second
interval
Seconds ScreenCurrent Time Screen
(Light)(Screen Switching)
Day of
the Week
Seconds
Changing Display Screen Contents
Each press of the button cycles digital display contents in
the following sequence: Calendar Screen \ Seconds Screen
The power supply of this watch uses a solar cell to generate
electrical power, which is stored by a rechargeable battery. Using
or storing the watch where it is not regularly exposed to light, or
allowing it to be blocked from light by your sleeve for long periods
as you are wearing it can cause the power of the rechargeable
battery to run down. To ensure stable operation, be sure to allow
the watch to be exposed to light as much as possible when you
are wearing or storing it.
Important!
Note that all data in memory and all settings are cleared whenever
you allow the level of the rechargeable battery to drop to Level 4.
❚
Checking the Battery Level
Use the Battery Level Screen to check the current level of the
watch’s rechargeable battery.
• In the Timekeeping Mode, press the C button once to change to
the Battery Level Screen.
Timekeeping Mode
Battery Level Screen
Level Indicator
Level 1
Level 2
Level 3
Level 4
• Exposing the watch to direct sunlight or other strong light may
cause the battery level indicator to momentarily indicate a level
that is higher than the actual battery level. Because of this, you
should wait for a short while after charging to check the battery
level indicator.
• When the battery level approaches Level 3, the digital display will
start to flash and the analog hands will move to the 12 o’clock
position.
• Even after the battery drops to Level 4, you will be able to resume
normal operation by charging the battery.
• When charging from Level 4, the digital display will start operating
when the battery reaches Level 3. At this time, you will be able to
configure digital time and date settings only. The analog hands will
start to operate when the battery reaches Level 2. At that time,
adjust the analog hand setting so it matches the digital time.
• When charging the battery, keep the watch exposed to light until
the battery reaches Level 2 or Level 1.
Normal operation enabled.
Normal operation enabled.
Signal reception, tones (alarms, hourly time
signal), face illumination, digital display, and
analog timekeeping disabled.
All functions, including timekeeping,
disabled.
Battery Level ScreenWorld Time Mode
Level Indicator
Stopwatch ModeAlarm Mode
Mode Indicator
Elapsed Time
❚
Start charging at Level 3!
Battery Level 3 indicates that remaining battery power is very low.
Be sure to expose the watch to light for recharging as soon as
possible after the Level 3 indicator starts to flash.
❚
Flashing Recover Indicator
If you use the light or alarms a number of times during a short
period, a recover (R) indicator flashes on the display and the
following operations become disabled as battery power recovers.
• Face illumination,
• Alarm and hourly time signal
• Analog timekeeping
• Time calibration signal reception
Normal operation will return after the
battery recovers.
Recover (R) Indicator
• If the battery drops to Level 3 while the recover indicator is flashing
on the display, the Battery Level Screen will show “”.
City Code
Current Time
in Selected
City
Alarm
• Alarm off
❚
Charging Precautions
Avoid charging the watch in the following locations, and anywhere
else where the watch may become very hot.
• On the dashboard of an automobile parked in the sun
• Very close to an incandescent light source or other sources of
heat
• In a location exposed to direct sunlight for long periods
Note that the display panel may become black under very high
temperatures. This is temporary, and the display will appear
normal again at lower temperatures.
Depending on the light source you are using, the case
of the watch may become quite hot during charging.
Take care to guard against burn injury after charging.
❚
To charge the battery
Point the solar panel (face) of the watch at a light source.
• Remember that even a partial blockage of the solar cell reduces
charging efficiency.
Example: Positioning the watch
Hourly Time Signal
• Hourly Time Signal off
Solar Cell
• The illustration shows the resin band model.
1
Operation Guide 3329
❚
Charging Guide
Starting from a full charge, the watch
should be able to continue operating
for about nine months without further
charging under the conditions
described below.
Daily Use (All time values are
approximate.)
• Face Illumination:
1.5 seconds
• Alarms: 10 seconds
• Signal reception: 4 times
Making sure the watch is regularly
exposed to light ensures stable
operation.
• Charge Times Required to Advance to a Higher Level
Exposure Level
(Brightness)
Outdoor Sunlight
(50,000 lux)
Sunlight Through a
Window (10,000 lux)
Daylight Through a
Window on an Overcast
Day (5,000 lux)
Indoor Fluorescent
Lighting (500 lux)
• Note that the above charging times are for reference only. Actual
charging time depends on a variety of environmental factors.
Level 4
Required Daily Charging Time
•
The following is the daily amount of
charging required each day to support
the operations under “Daily Use”.
Exposure Level
(Brightness)
Outdoor Sunlight
(50,000 lux)
Sunlight Through a
Window (10,000 lux)
Daylight Through a
Window on an Overcast
Day (5,000 lux)
Indoor Fluorescent
Lighting (500 lux)
Approximate Exposure Time
\
Level 3
\
Level 2
3 hours
7 hours
11 hours
124 hours
– – –– – –
Approximate
Exposure
Time
8 minutes
30 minutes
48 minutes
8 hours
\
Level 1
12 hours42 hours
44 hours159 hours
71 hours257 hours
Face Illumination
An LED light is used to illuminate the face of the watch for easy
reading in the dark. An auto light switch automatically illuminates
the face when you angle the watch towards your eyes for reading.
❚
To illuminate the face manually
BB
Press the
B button in any
BB
mode to illuminate the face of
the watch.
• You can use the procedure under
“Specifying the Illumination
Duration” to configure the
illumination duration as
approximately 1.5 seconds or 3
seconds.
• Pressing the B button illuminates the face regardless of whether
the auto light switch is on or off.
You may hear a faint rattling sound when you move the watch
around. This sound is caused by the movement of a metal
bulb that controls operation of the auto light switch, and does
not indicate malfunction.
❚
To illuminate the face with the auto light
switch
The auto light switch automatically illuminates the face
whenever you angle the watch towards your eyes for reading,
but only when it is dark.
• The auto light switch does not illuminate the face when
surrounding light is bright.
You can use the procedure under “Specifying the Illumination
Duration” to configure the illumination duration as
approximately 1.5 seconds or 3 seconds.
❚
To turn the auto light switch on and off
While a setting screen (one on which a setting is flashing) is on the
digital display, hold down the B button for about two seconds to
toggle the auto light switch on (auto light switch on indicator
displayed) and off (no indicator displayed).
Auto Light Switch
On Indicator
Power Saving
Power Saving causes the watch to automatically enter a sleep state and save power whenever the watch is left in the dark. The Power
Saving feature of the watch is turned on at the factory.
• Note that the watch may also enter the sleep state if the watch is blocked from light by your sleeve.
❚
How the sleep state works
Display sleep state
The display sleep state is triggered whenever the watch is left in the
dark for about one hour between the times of 10:00 p.m. and 6:00 a.m.
• The display sleep state causes the display to go blank, except for
a flashing Power Saving indicator. Alarms and the hourly time
signal continue to operate normally while the watch is in the
display sleep state. Even when the watch is in the display sleep
state, digital-analog time coordination and auto signal receive are
both performed.
•
The watch will not enter the sleep state if it is in the Stopwatch Mode.
Function sleep state
The function sleep state is triggered whenever the watch is left in
the dark for six or seven days.
• Alarms and the hourly time signal are disabled while the watch is
in the function sleep state. In the function sleep state, the analog
hands remain stopped at the 12 o’clock position, and auto signal
receive is not performed.
• Digital timekeeping functions continue to operate normally in the
function sleep state.
Power Saving
Indicator
❚
Positioning Your Arm Correctly
11
1
11
With the watch on
your wrist, position it
level with the ground.
• You should be wearing the watch on the outside of your wrist
when using the auto light switch.
• Make sure that the left (9 o’clock) and
right (3 o’clock) sides of the watch are
within ±15 degrees of being parallel
with the ground. The auto light switch
may not operate properly if the angle is
greater.
Important!
• The light may be difficult to see if you turn it on under bright
sunlight.
• If you press the B button or if an alarm operation starts while the
face is illuminated, illumination will turn off.
22
2
22
Rotate your arm so the watch
is angled at about 40 degrees,
so you can read its face.
❚
To recover from the sleep state
Move the watch to a brightly lit location or press any button. The
watch will also recover from the sleep state if you angle it towards
your eyes for reading (see “To illuminate the face with the auto
light switch”).
• It can take up to two seconds before display figures re-appear
after you place the watch in a well-lit area.
❚
To turn Power Saving on and off
Use the procedure under “To configure home time settings” to turn
Power Saving on or off.
Leaving the watch in a drawer or anywhere else it is dark can
cause Power Saving to trigger in order to conserve battery
power.
Auto Light Precautions
• Frequent use of the auto light can run down the battery.
• The auto light switch may cause the face to illuminate when your
sleeve covers the display of the watch.
• The face may not illuminate immediately when you angle the
watch towards your face. This does not indicate malfunction.
• The face remains illuminated for the currently set duration (1.5 or
3 seconds) only, even if you leave the watch angled towards your
face.
• The auto light switch is automatically disabled whenever battery
At least
40
degrees
power is at Level 3 or lower.
• The face may illuminate unintentionally when you wear the watch
on the inside of your wrist, when you shake your arm, or when
you raise your arm. Be sure to turn off the auto light switch
whenever you do not need illumination.
• Keep the auto light switch turned off whenever you are wearing
the watch on the inside of your wrist.
• Electro-static charge and magnetism can interfere with auto light
operation and even make operation impossible. If this happens
lower your arm to the starting position and then raise it again. If
you still have trouble with illumination, try lowering your arm down
to your side and then raise it to your face for reading.
• The auto light switch is automatically disabled when the watch is
in the Hand Setting Mode.
2
Operation Guide 3329
Specifying the Illumination Duration
1. In the Timekeeping Mode,
hold down
two seconds.
• This will cause your city code
to flash in digital display.
2. Press the
times to display the
flashing seconds count.
AA
A for about
AA
CC
C button three
CC
(3 times)
City Code
Seconds
3. Press the
4. After the setting is the way you want, press the
• The watch will also exit the setting screen automatically if you
BB
B button to
BB
toggle the illumination
duration between about
1.5 seconds ( indicator)
and 3 seconds
( indicator).
AA
A
button to exit the setting screen.
do not perform any operation for about two or three minutes.
AA
Reception Range
This watch is designed to receive the standard time calibration signal of Japan (JJY) or of the United States (WWVB). The signal that is
received depends on the current Home City setting.
• For information about selecting a Home City, see “Configuring Home TIme Settings”. For information about city codes, see the “World Time
City Code List”.
Home City
TYO
LAX, DEN, CHI, NYC
Japan Transmitter
Locations
Mt. Hagane
(60kHz)
500km
1000km
Either the Mt. Otakadoya signal (40kHz) or the Mt. Hagane signal (60kHz)
Fort Collins, Colorado signal
1000km
Mt. Otakadoya
500km
(40kHz)
Transmitter
U.S. Transmitter
Location
3000km
1000km
Fort Collins
How a Radio-controlled Watch Works
What is a radio-controlled watch?
Your radio-controlled watch is designed to receive a time
calibration signal that contains standard time data, and adjust its
current time setting accordingly.
Long-
Watch
wave time
calibration
signal
Signal data
Time data
Internally
Transmitter
Cesium
atomic clock
After the watch receives the Standard Time signal, it performs
internal calculations to determine the current time. Because of
this, there may be an error of up to one second in the
displayed time.
Signal is received
using built-in antenna.
Watch decodes
received data and
converts it to time
data.
Decode
Time is adjusted
according to time
data.
Location
Reception is difficult and may even be impossible in the locations
described below. Avoid such locations when performing signal
reception.
• You should think of your watch operating like a radio or TV when it
is receiving the calibration signal.
Among or near buildings
Inside a vehicle (automobile,
train, plane, etc.)
Near high-voltage lines
Next to a household appliance or
office equipment (TV, speaker,
fax, computer, cell phone, etc.)
Calibration Signal
• The Japanese calibration signal (Call Sign: JJY) is maintained by
the National Institute of Information and Communications
Technology (NICT). It is a long wave signal transmitted 24 hours a
day from the Mt. Otakadoya transmitter (40kHz) located in
Tamura-gun, Fukushima Prefecture, and from the Mt. Hagane
transmitter (60kHz) located on the border between Saga
Prefecture and Fukuoka Prefecture.
• The U.S. calibration signal (Call Sign: WWVB) is transmitted by
the National Institute of Standards and technology from Fort
Collins, Colorado.
Note that transmission of the standard wave may be
interrupted occasionally due to maintenance, lightening, etc.
Receiving the Calibration Signal
There are two methods you can use to receive the time calibration signal.
• Auto receive (Reception is performed automatically at
midnight, 1:00, 2:00, 3:00 and 4:00 each morning.)
• Manual receive (You initiate reception using a button
operation.)
• If reception is not successful for any of the normal auto receive
operations shown above, auto receive is performed one more
time at 5:00 a.m.
• The watch is set up for auto receive at the factory, so all you need to
do is to place it in a location that allows good reception each night.
❚
To position the watch for optimum reception
Remove the watch from your wrist and place it somewhere so its
top (12 o’clock side, where the antenna is located) is facing
approximately in the direction of the signal transmitter. Keep the
watch away from metal objects.
Resin band
• Under optimum conditions, the calibration signal should be
receivable up to 1,000 kilometers from the transmitter. Note
that the wave is relatively weak at distances greater than
500km, so reception may be poor at long distances.
• Geographic contours, nearby buildings, seasonal conditions, the time of day, can even make reception impossible even when you are within
range of the transmitter.
• Best reception is possible late at night.
• Under optimum conditions, the calibration signal should be
receivable up to 3,000 kilometers from the transmitter. Note
that the wave is relatively weak at distances greater than
1,000km, so reception may be poor at long distances.
In a location where there is
radio interference
(construction site, airport, etc.)
If you are experiencing problems with reception, move away
from the types of locations described above to a location with
better reception, and try again.
Near mountains
Metal band
• Orienting the watch so it is sideways to the transmitter makes it
more difficult to receive the signal.
• Do not move the watch while it is receiving the calibration signal.
3
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