This is awesome! Close up of the rigorous details into a Seiko watch

Posted by Ezra 5 years ago in Cool videos
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The watches engine is Seiko's Spring Drive; a part electrical movement. It uses a mainspring, barrel, automatic winder and stem winding like in a mechanical watch to store the watch energy. The conventional escapement is replaced with a device that Seiko calls a Tri-synchro Regulator to regulate the unwinding of the mainspring.

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