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- Main Article: Zenith El Primero
Original El Primero
New Complications
Third-Generation
- 2002 updates
- Zenith 4001 (2002) - Flyback chronpgraph, full calendar, moon phase by disc
- Zenith 4002 (2002) - Quickset date at 6:00, small seconds at 9:00, 30 minute counter at 3:00
- Zenith 4003 (2003) - Flyback chronograph, perpetual calendar, moon phase by disc
- Zenith 4009 (2002) - Flyback chronograph, full calendar, moon phase by hand
- Zenith 4100 - Triple calendar, moon phase at 6:00, 30 minute counter at 3:00, small seconds at 9:00
- Updated 2005 El Primero
- Zenith 4010 (2012) - Big date at 6:00, 30 minute counter at 3:00, small seconds at 9:00
- Zenith 4021, 4023 (2005) - Power reserve indicator by central pointer with 6:00 scale, 30 minute counter at 3:00, open heart
- Zenith 4026 (2005) - Rattrapante chronograph, big date at 6:00, 30 minute counter at 3:00, small seconds at 9:00
- Zenith 4054 - Annual calendar, 60 minute counter and date window at 6:00, small seconds at 9:00, day and month windows at 3:00
- Zenith 4055
- Zenith 4062 - Open heart, 30 minute counter at 3:00, no date
- Zenith 4063 - Open heart, 30 minute counter at 3:00, 12 hour counter at 6:00, no date
- Zenith 4068 - Big date
- Zenith 4069 - No date or hour counter
- 2010 Striking 10th El Primero
- 2014 Silicon escapement El Primero
- Zenith 4039 - Big date at 2:00, 30 minute counter at 3:00, retrograde power reserve indicator at 6:00, open heart
- Zenith 4047 - Big date at 2:00, 30 minute counter at 3:00, moon phase at 6:00, open heart, silicon escape wheel and lever
- Zenith 4061 (2014) - Silicon escape wheel and lever, no date, open heart, 30 minute counter at 3:00, 12 hour counter at 6:00
- Zenith 4613 (2014) - No chronograph or date, silicon escape wheel and lever
Fourth Generation
- Zenith 3600 (2019) - 10-second chronograph sweep hand driven directly from the escape wheel
Haute Horology
- Tourbillons (from 2004) - 10 second
- Chiming
- Hand-winding El Primero
- Zenith 4810 (2014) - Hand winding, no chronograph, chain and fusée, power reserve indicator
- Zenith 8804 (2014) - Hand winding, "Gravity Control" gyroscope, no chronograph, power reserve indicator at 3:00, small seconds at 9:00
- Zenith 8805 (2015) - Hand winding, "Gravity Control" gyroscope, chain and fusée, no chronograph, power reserve indicator at 4:00, small seconds at 9:00
- Zenith 8808 - Hand winding, "Gravity Control" gyroscope, no chronograph, power reserve indicator at 3:00, retrograde equation of time at 9:00
- Zenith 8812 S (2018) - Hand winding "gravity control" gyroscope
- Zenith 9004 (2017) - Dual escapements, one at 10 Hz and another at 100 Hz
- Zenith 9020 (2019) - Dual tourbillons, one at 10 Hz and another at 100 Hz
Ebauche Variants
