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PARTS LIST
FEATURES
Cal. V137A is an analogue watch with a solar power generation system.
l Solar power generation system
The watch operates while charging electricity by converting light received on the dial to
electrical energy. It lasts for 6 months after full charge.
l Energy depletion forewarning function
When the energy stored in the rechargeable battery is reduced to an extremely low level, the
second hand starts moving at 2-second intervals instead of the normal 1-second intervals.
l Guideline of charging time
Environment/Light source
General offices/ Fluorescent
Light
30W 20cm/Fluorescent light
30W 3cm/ Fluorescent light
Cloudy weather/Sunlight
Fair weather/Sunlight
The above table provides only a general guideline.
It is recommended that the watch be charged for as long as the charging time according to the
column "Time required for steady operation" in this table in order to assure the stable movement
of the watch.
l Caution for charging
When charging the watch, do not place it too close to a photo flash light, spotlight, incandescent
light or other light sources as the watch temperature will become extremely high, causing damage
to the parts inside the watch.
When exposing the watch to sunlight for recharging, do not leave it on the dashboard of a car, etc.
for a long time, as the increase of watch temperature to an extremely high level can damage watch
parts or cause malfunctions.
While charging the watch, make sure the watch temperature does not exceed 60 °C.
Illumination
Time required
(lux)
for full charge
700
3,000
90 hours
10,000
30 hours
10,000
30 hours
100,000
10 hours
2/18
Time required
for steady
operation
-
16 hours
4 hours
1.2 hours
1.2 hours
0.1 hours
Cal. V137A
Time to charge
1 day of power
110 minutes
30 minutes
8 minutes
8 minutes
1 minutes
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