====== Rolex 620 ======
**Rolex 620** is a calibre by [[Rolex]].

[[Self-winding]] movement, unidirectional winding [[rotor]], 18,000 A/h, 17 [[jewels]], [[small seconds]].

The world's first [[self-winding]] movement with [[rotor]] winding (Perpetual), [[1931]] first presented by [[Rolex]] and developed by Emil Borer and [[Wilsdorf, Hans|Hans Wilsdorf]].

<WRAP ud ud_mov>
**Description:**
  * [[Self-winding]] movement, unidirectional winding
  * [[Escapement]] Stone lever
  * [[Yoke winding system]]

**Functions:**
  * [[Small seconds]]

**Data:**
  * 11½ [[ligne]]s
  * D 26 mm, H 7.4 mm
  * 17 [[jewels]]
  * 18,000 A/h
  * Power reserve 41 h

**Production period:**
  * [[1931]]-?
</WRAP>

{{tag>Movements Automatic_movements Rolex_calibres}}