Temperature difference drive unit, and electric device,...
Thermal power generating timepiece and rear cover for...
Thermoelectric generating electronic timepiece
Thermoelectric generation unit and portable electronic...
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 and portable electronic device having...
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 movement
Timepiece operated by solar cells