7 Charging time
Below are the approximate values for when exposing the dial to light continuously.
Use the table below only as a reference.
Charging the battery
This watch has the “Eco-Drive” system, which
converts light into electrical energy using the
solar cell beneath the dial. The system makes
you free from care of battery replacement and
is environment-friendly as no battery disposal is
required.
<After the battery is fully charged—Overcharge
prevention function>
After the battery is fully charged, charging automatically
stops to prevent overcharging, which may damage
the battery, or affect the accuracy, functions, and
performance of the watch.
Eco-Drive
Illuminance
(Lx)
Environment Charging time
to work for one
day (approx.)
Charging time to start
working normally when the
battery is empty (approx.)
Time for charging fully
when the battery is
empty (approx.)
500 Interior lighting
4 hours — —
1,000 60-70 cm (24-28 in.) under
a fluorescent lamp (30 W)
2 hours — —
3,000 20 cm (8 in.) under a
fluorescent lamp (30 W)
45 minutes
7.5 hours —
10,000 Under cloudy weather
12 minutes 2.5 hours 80 hours
100,000 Under direct sunlight in
summer
3 minutes 50 minutes
16 hours
Battery duration after fully charging (without further
charging)
About 8 months
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