Temperature difference drive unit, and electric device,...
Thermal power generating timepiece and rear cover for...
Thermoelectric generating electronic timepiece
Thermoelectric unit and timepiece using it
Thermoelectrically operated timepiece
Thermoelectrically-powered wrist watch
Time keeping apparatus and control method therefor
Time measurement device and method
Timepiece
Timepiece and drive unit therefor
Timepiece and electronic apparatus with bulb-shaped...
Timepiece comprising a generator driven by the main spring of a
Timepiece device
Timepiece dial and production method therefor
Timepiece having thermoelectric generator unit
Timepiece including a power cell compartment closed by a gasket
Timepiece operated by solar cells
Timepiece with power-reserve indication
Transformerless LED digital alarm clock