Rolex 4160

Cal. 4160 (and the similar Cal. 4161) is an automatic Regatta countdown calibre by Rolex.

Overview

Self-winding chronograph movement, rotor bi-directional winding, 28,800 A/h, 42 jewels, Kif shock protection, power reserve 72 hours. Cal. 4160 contains a programmable timer with functions set using the special "Ring Command" bezel on the watch.

The movement was specifically developed on basis of the calibre 4130 for the model Rolex Yacht-Master II.

The similar Cal. 4161 was introduced in 2013 with the stainless steel Yacht-Master II Ref. 116680.

Manufacturer: Rolex Description: Self-winding movement, bi-directional winding Escapement: Stone lever Yoke winding system Parachrom blue-Breguet hairspring Glucydur balance wheel with Microstella regulation screws Chronometer certificate (COSC) Kif shock protection Column wheel calibre Functions: Chronograph Hacking seconds Patented regatta countdown (10 minutes) Data: 13½ lignes D 30.5 mm, H 6.5 mm 42 jewels 28,800 A/h 360 components Power reserve 72h Production period: Since 2007