====== Zenith 4003 ======
**Zenith 4003** is a [[manufacture]] movement by [[Zenith]].

[[Automatic]] [[chronograph]] with [[perpetual calendar]] and [[moon phase]]. Bi-directional winding ball-bearing [[rotor]]. Further development of the calibre [[Zenith 410]] (//El Primero//).

Used e.g. with the model [[Zenith Grande Chronomaster XXT Quantième Perpétuel]].


<WRAP ud ud_mov>

**Description:**
  * [[Self-winding]] movement, bi-directional winding
  * [[Escapement]] Stone lever
  * [[Yoke winding system]]
  * Ball-bearing [[central rotor]] in 21ct [[rose gold]] or [[white gold]]
  * [[Chronometer]] certificate ([[COSC]])
  * [[Column wheel]] calibre
  * [[Shock protection]] Kif-Ultraflex
  * 321 components

**Functions:**
  * [[Chronograph]]
  * [[Small seconds]]
  * [[Perpetual calendar]] and [[moon phase]]

**Data:**
  * 13¼ [[ligne]]s
  * D 30.0 mm, H 8.1 mm
  * 31 [[jewels]]
  * 36,000 A/h
  * Power reserve &gt; 50h

**Production period:**
  * Since [[2005]]
</WRAP>

{{tag>Movements Automatic_movements Chronograph_movements Zenith_calibres Zenith_El_Primero_calibres}}