Photovoltaic electronic timepiece

Portable electronic device

Portable electronic device and control method for...

Portable wrist device

Power circuit for an electronic timepiece

Power circuit for electronic wristwatch

Power feeding apparatus, power receiving apparatus, power...

Power generating type electronic timepiece

Power line-operated electronic time-clock

Power source control circuit for an analog electronic timepiece

Power supplies for electronic device

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...