====== Zenith 3604 ======

{{wst>image_cr|Zenith|3604}}

**El Primero 3604** is a [[manufacture]] movement by [[Zenith]].

[[Automatic]] column-wheel [[chronograph]] movement, able to measure and display the 1/10th of a second. Based upon the calibre [[Zenith 3600]] from [[2021]] with power reserve of 60 hours and stop-second mechanism.

This variant features an open base plate and bridges that allow for a clearer view of the high-frequency 5Hz escapement with lubricant-free silicon escape wheel and pallet lever.

Used e.g. with the model [[Zenith Chronomaster Open]] (2022).

<WRAP ud ud_mov>
**Description:**
  * [[Self-winding]] movement, bi-directional winding
  * [[Column wheel]] calibre
  * [[Silicon]] escape-wheel and lever
  * [[Shock protection]] Kif-Ultraflex
  * [[Chronometer]] certificate ([[COSC]])

**Functions:**
  * Hours, minutes, [[Small seconds]], date
  * [[Stop-second]]
  * 1/10th of a second [[Chronograph]]

**Data:**
  * 13¼ [[ligne]]s
  * D 30.0 mm, H 6.6 mm
  * 35 [[jewels]]
  * 269 components
  * 36,000 A/h
  * Power reserve 60 h

**Production period:**
  * From [[2022]]
</WRAP>

{{tag>Movements Automatic_movements Chronograph_movements Zenith_calibres Zenith_El_Primero_calibres}}