====== Zenith 4009 ======
**Zenith 4009** is a calibre by [[Zenith]].

[[Self-winding]] [[chronograph]] movement with [[flyback]] function, [[full calendar]] and [[moon phase]].

Further development of the calibre [[Zenith 410]] (//El Primero//) with bi-directional winding ball-bearing [[central rotor]].

Used e.g. with the model [[Zenith Grande Chronomaster XT]] "El Primero".

<WRAP ud ud_mov>
**Description:**
  * [[Self-winding]] movement, bi-directional winding
  * [[Escapement]] Stone lever
  * [[Yoke winding system]]
  * [[Rotor]] in 22ct gold or bimetallic
  * [[Chronometer]] certificate ([[COSC]])
  * [[Column wheel]] calibre
  * [[Shock protection]] Kif-Ultraflex
  * 346 components

**Functions:**
  * [[Chronograph]]
  * [[Small seconds]]
  * [[Flyback]] function
  * Triple calendar (day of the week, month, date)
  * [[Moon phase]] operated via pusher at 6 o'clock

**Data:**
  * 13¼ [[ligne]]s
  * D 30.0 mm, H 7.55 mm
  * 31 [[jewels]]
  * 36,000 A/h
  * Power reserve > 50h

**Production period:**
  * Since [[2002]]
</WRAP>

{{tag>Movements Automatic_movements Chronograph_movements Flyback_chronograph_movements Zenith_calibres Zenith_El_Primero_calibres}}