Rolex 3185

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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.

External Links




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


Central seconds
Date change via dual time zone
Hacking seconds
Complications: GMT indication (dual time zone), separately adjustable


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