Rolex cal. 2130
The Rolex cal. 2135 is an in-house developed self-winding (automatic) movement used in the Ladies Rolex Datejust. It was introduced by Rolex in 1983, has a frequency of 28,800 and a power reserve of 42 hours and features central seconds and a quickset date functionality. It is also COSC certified, has 29 jewels and a frequency of 28,800 beats per hour (A/h).
