Rolex 620

Rolex 620 is a calibre by Rolex.

Self-winding movement, unidirectional winding rotor, 18,000 A/h, 17 jewels, small seconds.

The world's first self-winding movement with rotor winding (Perpetual), 1931 first presented by Rolex and developed by Emil Borer and Hans Wilsdorf.

Manufacturer: Rolex Description: Self-winding movement, unidirectional winding Escapement: Stone lever Yoke winding system Functions: Small seconds Data: 11½ lignes D 26 mm, H 7.4 mm 17 jewels 18,000 A/h Power reserve ?h Production period: 1931-?