Eco-Drive watches use the simplest, yet most technically advanced power
generating and storage system in the Watch Manufacturing Industry. A
solar conversion panel and energy cell are the power provider for these
Quartz Watches. Eco-Drive's ability to use light from any source to
generate electrical power means that the supply is limitless and free.
The absence of any added complex power generating machinery that would
require additional upkeep is another big advantage.
Charge time from Stop State:
For 1 day use:
charge: usually, overhead office light is insufficient to achieve a
full charge from a completely depleted power reserve. We recommend that
you use natural outdoor light, or an incandescent light source 20" from
the watch for charging a watch in this state. However, office light is
sufficient for keeping your watch continually charged.
 Unscrew the crown before pulling the crown out if it is a screw down crown.
 To set the time:
First pull out the crown to the first clicking position to adjust calendar.
Then pull out the crown to the second clicking position to adjust time.
 Setting the date and day
Do not set the date and day between 9pm and 4.30am. It may not get the correct date and day the next day.