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Inside an automatic mechanical movement

Inside your mechanical watch is a fine-tuned machine called the SII-NH35A made by Seiko. 1. MOVEMENT DIMENSIONS · Outside diameter ψ27.40 mm · Casing diameter ψ29.36 mm (with dial holding spacer) · Total height 5.32 mm 2. SPECIFICATIONS · Winding mechanism Manual winding Automatic winding with ball bearing Both winding with one way clutch · Additional […]