Rolex 3185

Rolex 3185 is a self-winding movement by Rolex. It is bi-directional winding and has 28,800 A/h, 31 jewels, date and GMT indication and a power reserve of 50 hours.

Basing on the calibre Rolex 3135, it features an additional GMT indication (dual time zone). It is used in the GMT-Master II Ref. 16710 and Explorer II Ref. 16570. Cal. 3185 was updated with Parachrom springs and a spring-loaded date mechanism around 2005 to become Cal. 3186. The larger Cal. 3187 was used in the Explorer II, Ref. 216570 starting in 2011.

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• Rolex 3185

Manufacturer: Rolex Description: Self-winding movement, bi-directional winding Breguet hairspring Chronometer certificate (COSC) Escapement: Stone lever Yoke winding system Glucydur balance wheel with microstella screws Kif shock protectionen für balance wheel and escape wheel Functions: Central seconds Date change via dual time zone Hacking seconds Complications: GMT indication (dual time zone), separately adjustable Data: 12½ lignes D 28.5 mm, H 6.45 mm 31 jewels 28,800 A/h Power reserve 50h Production period: Production: 1988-2005 Successor: Rolex 3186, Rolex 3187