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CITIZEN Eco-Drive Riiiver W510 Instruction manual
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.
• Avoid leaving it 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.
• The watch stops charging automatically after finishing (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 18 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 and date are indicated correctly.
Charging time by environment
Below are the approximate charging times when exposing to light continuously.
Please use this table as a reference only.
Environment
Outdoors
(sunny)
Outdoors
(cloudy)
20cm (7-
7/8 inches)
away from a
fluorescent
lamp (30W)
Interior
lighting
Illuminance
(lx)
100,000
10,000
3,000
500
To work for one day
6 minutes
19 minutes
1.5 hours
6.5 hours
To start working
normally when the cell is
discharged
3 hours
12 hours
40 hours
−
To become fully
charged when the cell is
discharged
25 hours
60 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.
ON
After charged fully, the watch runs without additional charging
Using with a smartphone
7 months
*
Using with no smartphones
About 1.0 year
Power save function kept activated
About 1.1 years
* See the table of “Standard use with the smartphone” in “
conditions of “Using with a smartphone”.
Cautions when connected with a smartphone
• Frequent connection with a smartphone and frequent use of iiideas consume
much amount of power. Charge the watch frequently.
• Take also care that your smartphone is charged enough.
Power save function
The second hand stop automatically at 0 seconds to save power when the dial of the
watch has not been exposed to light for 30 minutes.
• However, automatic time reception is not executed while saving power.
• The power save function is not activated when the position of the crown is not
0
.
Canceling the power save function
The power save status ends and the hands return to normal indication in the
following cases:
• The dial is exposed to light and power generation starts.
• Activity is detected and measured through the acceleration sensor of the watch
(when data of your body had already been registered).
After power saving of a long period of time, check the time and calendar of the watch
and adjust them if required.
