ETA
ETA 7750
Swiss lever · introduced 1973
Beat rate
28,800 vph
Power reserve
42h
Jewels
25
Introduced
1973
Escapement
Swiss lever
The ETA 7750 is the dominant column-wheel cam-lever chronograph movement in the Swiss industry. Its vertical-clutch design minimizes the jump at chronograph start, and the cam-and-lever actuation is simple enough that trained watchmakers worldwide can service it reliably. The movement is thick by modern standards, which explains its predominance in tool and pilot chronographs rather than dress pieces.
Specifications
Beats per hour
28,800
Jewels
25
Power reserve
42h
Diameter
30.4mm
Height
7.9mm
Escapement
Swiss lever
Introduced
1973
Finishing
Commercial
Service interval
5 years
Service cost tier
Mid-range
Complications
chronographdatedayflyback capable
Known service issues
- Chronograph cam-lever wear leads to drift at chronograph start after 10-plus years
- Hour-totalizer wheel can lose a tooth under heavy chronograph use
- The rotor weight and thickness make the movement less suitable for slim cases
Notable in
- IWC Portugieser Chronograph IW371401
- Breitling Navitimer B01 (earlier versions)
- TAG Heuer Carrera CV2010
- Zenith El Primero 36000 VPH (shares architecture)
References in our catalog using this caliber
- Universal Genève Diver Chronograph UN-243-712016–present
Buying advice
Practical guides for buying a watch with this caliber on the pre-owned market: