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CITIZEN Bluetooth Watch W770 Instruction manual
Using the alarm [Alarm]
The alarm on this watch is based on the time of the [TME] mode.
• Indication of the function hand cannot be changed in the [ALM] mode.
Checking the alarm setting
1
Change the mode to [ALM] (page 2) and push the crown in
to position
0
.
The hour, minute and 24-hour hands indicate the alarm time
currently set and the function hand shows the alarm setting (ALM
ON/OFF).
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Alarm setting
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• Each time you press button
A
, ON/OFF
of the setting changes alternately.
2
Change the mode to [TME] and push the crown in to position
0
to finish the procedure.
Indication returns to normal.
When the time set comes
Alarm sounds for 15 seconds as the time set comes.
• Alarm does not sound when the position of the crown is not
0
.
To stop the alarm sound
Press any button.
Changing alarm setting
• The alarm time is set in 24-hour basis.
1
Change the mode to [ALM] (page 2) and pull the crown out
to position
2
.
The alarm time currently set is displayed and the function hand
shows the alarm setting (ALM ON/OFF).
2
Press and hold lower right button
A
for 2 seconds or more.
The minute hand moves slightly indicating the alarm time may be
set.
3
Rotate the crown to set the alarm time.
• Check AM/PM referring to the 24-hour hand.
• If you rotate the crown quickly a few times, the hands will move
continuously. To stop the rapid movement, rotate the crown in
either direction.
4
Press and release the lower right button
A
to set the alarm
setting (ALM ON/OFF).
• Each time you press the button
A
, ON/OFF changes alternately.
5
Change the mode to [TME] and push the crown in to position
0
to finish the procedure.
Indication returns to normal.
Checking the alarm
Alarm sounds while pressing and holding button
B
in step 1.
Charging your watch
This watch has a solar cell under the dial and stores the power
generated by the cell in its built-in rechargeable cell.
The cell is charged by exposing the dial to light such as direct
sunlight or fluorescent lamps.
For optimal performance, be sure to:
• Put the watch in a location where the dial is exposed to bright
light such as by the window even when it is not used.
• Expose its dial to direct sunlight for 5 or 6 hours at least every
week.
• Do not leave the watch in dark places for long periods of time.
CAUTION
• Do not charge the watch at a high temperature (about 60°C (140°F) or higher) as doing
so may cause movement malfunction.
• If the watch is obscured from light by long sleeves frequently, supplemental charging
may be needed to ensure continual operation.
ALM ON ALM OFF
ON
OFF
L
M
ON
OFF
L
M
• The watch stops charging automatically when the cell is fully charged
(overcharging prevention function). The function prevents damage to
performance of the watch and rechargeable cell due to overcharging.
When the watch reaches a low charge state (insufficient charge warning
function
)
When the power reserve becomes low, the second hand
moves once every two seconds. This is the insufficient
charge warning function. Be sure to fully charge your watch
immediately as outlined below.
• When the watch is sufficiently charged, the second hand
will move normally.
• If you do not charge the watch for 10 days or longer after
the insufficient charge warning movement has begun, the watch will be depleted
of all power and stop.
During the insufficient charge warning state
The time, date and day of week are indicated correctly.
• The indication in the [TME] mode is displayed in the other modes and
functions in them are not available.
Charging time by environment
• Below are the approximate charging times when exposing to light continuously.
Please use this table as a reference only.
Environment
Illuminance
(lx)
Charging time (approx.)
To work for
one day
To start working
normally when the
cell is discharged
To become fully
charged when the cell
is discharged
Outdoors (sunny)
100,000 12 minutes 9.5 hours 30 hours
Outdoors (cloudy)
10,000 30 minutes 25 hours 70 hours
20 cm (7-7/8
inches) away from
a fluorescent lamp
(30W)
3,000 1.5 hours 70 hours −
Interior lighting
500 8 hours − −
•
Exposing to direct sunlight is recommended to charge your watch.
A fluorescent
lamp or interior lighting does not have sufficient illumination to charge the
rechargeable cell efficiently.
After charged fully, the watch runs without additional charging
Using with a smartphone Using with no smartphones
About 9 months* About 1.5 years
* When the watch is connected to your smartphone about 6 hours a day and receives messages about
10 times a day, you can use the connecting feature of the watch about 100 days in the 9 months. For
details, see page
3
.
Cautions when connected with a smartphone
• Long-time connection with a smartphone and reception of many notifications in
a day will accelerate power consumption. Be sure to keep your watch sufficiently
charged when always connecting the watch with your smartphone.
• We recommend disconnecting your smartphone (page
5
) when connection is not
needed.
• Be also sure your smartphone is sufficiently charged.
Power save function
The second hand stops automatically to save power when no power generation of
the watch has continued in a dark place.
• The watch works normally even while saving power.
• The power save function does not operate under the following conditions:
- The crown is in position
1
or
2
.
- The mode is [CHR] or [ALM].
- The second hand indicates notification.
Canceling the power save function
The power save status ends and the hands return to normal indication as the
watch is operated or the dial is exposed to light and power generation starts.
• Power save status is also canceled when receiving time info or notification.
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