SEIKO 2010 セイコー Spring Drive Collection スプリング ドライブ
コレクション On 7th October 2005, Seiko announced the launch of the Seiko Spring Drive, a new movement that provides 72 hours of power. This new movement uses a “Tri-synchro Regulator”. The power from the spring is used to turn the gear train and a generator. The generator powers a circuit that includes a low consumption [...]
