Seiko SKA369P1 Kinetic Diver's 200 m (tool watch suitable for scuba diving). Seiko Kinetic watches combine a self-winding rotor mechanism (as used in automatic mechanical watches) to generate electricity with a piezoelectric quartz crystal as its timing element. Such movements aim to provide the advantages of quartz without the environmental impact of batteries. The 5M62 caliber Kinetic movement used in this watch can run for up to 6 months on its secondary power cell (KINETIC ELECTRICITY STORAGE UNIT) before it needs to be swung to generate electricity for recharging.
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Original uploader was <a href="https://el.wikipedia.org/wiki/User:Naklig" class="extiw" title="el:User:Naklig">Naklig</a> at <a class="external text" href="https://el.wikipedia.org">el.wikipedia</a>
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Transferred from <a class="external text" href="https://el.wikipedia.org">el.wikipedia</a>