Calibre record · Automatic chronograph (integrated)
Zenith El Primero 3019 PHC
Documented
Announced in January 1969, one of the first automatic chronographs and the first serial movement at 5 Hz, able to time tenths of a second.
- Manufacturer
- Zenith
- Type
- Automatic chronograph (integrated)
- Winding
- Automatic
- Production
- 1969–present (later versions)
- Country
- Switzerland
- Diameter
- 30 mm (13 lignes)
- Height
- 6.5 mm
- Jewels
- 31
- Frequency
- 36,000 vph (5 Hz)
- Power reserve
- c. 50 h
- Oscillator / escapement
- Detached lever escapement
- Complications
- Column-wheel chronograph; date
Figures are those commonly published for the standard version; individual versions and grades differ. “Undocumented here” means the value has not yet been confirmed for this record.
History
When Zenith's American owners ordered production of mechanical movements stopped in the mid-1970s, workshop head Charles Vermot hid the plans and tooling; they allowed production to restart in the 1980s, when the El Primero also supplied Rolex's Daytona (1988–2000).
