Power supply device with voltage dropping means

Power supply for electronic timepiece

Power supply for electronic timpiece

Power supply unit for electronic appliances

Power-generating device, charging method and clocking device

Power-saving electronic watch and method for operating...

real time clock charging circuit

Self-chargeable electronic timepiece with operating voltage chec

Self-charging electronic timepiece

Self-charging electronic timepiece

Sensor function-equipped portable device

Solar battery powered watch

Solar night splitter and event timer

Solar-cell watch dial and process for producing the same

Solar-driven eternity clock

Starter for electricmagnetic converter, and timepiece

Stopwatch and watch

Substrate board/carrier frame assembly

Swinging type power generator

Temperature difference drive unit, and electric device,...