====== Zenith 4021 ======
**Zenith 4021** is a calibre by [[Zenith]].

Further development of the calibre [[Zenith 410]] (//El Primero//) with [[power reserve indicator]], [[skeletonized]] in the area of the [[escapement]].

Used e.g. with the model [[Zenith Chronomaster T Open]].

<WRAP ud ud_mov>
**Manufacturer:**
  * [[Zenith]]

**Description:**
  * [[Self-winding]] movement, bi-directional winding
  * [[Escapement]] Stone lever
  * [[Yoke winding system]]
  * [[Chronometer]] certificate ([[COSC]])
  * [[Column wheel]] calibre
  * [[Shock protection]] Kif-Ultraflex

**Functions:**
  * [[Chronograph]]
  * [[Small seconds]]
  * [[Power reserve]] indicator

**Data:**
  * 13½ [[ligne]]s
  * D 30.0 mm, H 7.75 mm
  * 39 [[jewels]]
  * 248 components
  * 36,000 A/h
  * Power reserve 55h

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

{{tag>Movements Automatic_movements Chronograph_movements Zenith_calibres Zenith_El_Primero_calibres}}