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- ネツ ハツデン ウオッチ ノ カイハツ
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This paper describes the development of a thermal energy watch. The Cal. 6C is the thermal energy watch that converts body heat into power. The watch has an ultra compact power generation system with a power generation monitoring function and a power saving function that gradually stops the hands when no power is generated. It also has a fully automatic perpetual calendar function valid through February 28, 2100.
Micromechatronics 43 (3), 29-36, 1999
The Horological Institute of Japan