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