====== 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 [[Rolex 4130|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.


<WRAP ud ud_mov>

**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 [[ligne]]s
  * D 30.5 mm, H 6.5 mm
  * 42 [[jewels]]
  * 28,800 A/h
  * 360 components
  * Power reserve 72h

**Production period:**
  * Since [[2007]]
</WRAP>

{{tag>Movements Rolex_calibres Column_wheel_chronograph_movements Automatic_chronograph_movements}}