Automatic chronographManufacture
El Primero 400
Classic high-frequency integrated automatic chronograph.
- Reserve
- 50 h
- Frequency
- 36,000 vph
- Jewels
- 31
Switzerland · Movement Manufacturer
Zenith
Zenith is best known for the integrated El Primero architecture, one of the defining automatic chronograph movements.
4 calibres1865 foundedHigh-frequency chronographs
Selected Milestones
1969 — El Primero launch
1970s — Tooling preserved during quartz crisis
1980s — El Primero production restored
2017 — Defy El Primero 21
Calibre Library
Zenith movements
Automatic chronographManufacture
El Primero 3600
Modern high-frequency calibre displaying tenths of a second.
- Reserve
- 60 h
- Frequency
- 36,000 vph
- Jewels
- 35
Automatic chronographManufacture
El Primero 9004
Dual-escapement architecture used in Defy 21.
- Reserve
- 50 h
- Frequency
- 36,000 / 360,000 vph
- Jewels
- 53
AutomaticManufacture
Elite 670
Slim automatic manufacture calibre.
- Reserve
- 50 h
- Frequency
- 28,800 vph
- Jewels
- 27