Orient WE (KL7) Instruction Manual page 10

 ROUGH ESTIMATES OF REQUIRED CHARGING TIMES
Illuminance
Light source
(Lx)
00 Fluorescent light
000 Fluorescent light
0000 Sunlight
00000 Sunlight
* Use the numerical values in the above table as rough estimates.
* Values in the column marked with (★) are required times to charge the watch
through exposure to light while stopped until the second hand changes from
moving in -second intervals to -second intervals. In some cases with the
times listed, the second hand will advance normally in -second intervals
even without being charged but will switch over to -second intervals rather
suddenly. To ensure that this does not occur, make sure to charge the watch
for the estimated length of time given.
* Required charging time settings were calculated based on standard models.
There may be differences in the length of charging times needed depending
on dial design and other factors.
* The watch comes with an overcharge prevention mechanism designed
to protect the watch from damage even if it is charged for longer than
the length of the required charging time for full charge. The overcharge
prevention mechanism works automatically to prevent the watch battery
from charging anymore once fully charged.
0
Required
Environment
charging time for
(Estimate)
full charge
General office
environment
0 cm, 0 W Approx. 0 hrs.
Cloudy Approx. 5 hrs.
Clear Approx.  hrs.
Required
charging time
until the second
hand moves
in -second
intervals (★)
― Approx. 5 hrs.
Approx.  hrs.
Approx.  hrs.
Approx. 0 min.
Required
charging time to
run the watch for
 day
Approx. 0 min.
Approx. 0 min.
Approx. 0 min.
Approx.  min.