CaliberDB

ETA 2770

Mechanical c. 1969 Self-winding (rotor) Hacking
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Notes

1969-1982, >25000000 (all automatics of the family) differences not known between 2770, 2776

Dimensions

Width25.6 lignes (57.75 mm)
Height5.3 mm
Stem height1.45 mm
Hands (H × M × S)1.5 × 0.9 × 0.25 mm

Technical data

Beat rate21,600 vph (3 Hz)
Lift angle52 °
Power reserve47 h
Jewels—
Shock protection—
Mobile stud carrierNo

Complications

Self windingRotor
Date No
Day No
HackingYes
ChronographNo

Mainspring

GR code—
Height1.4 mm
Thickness0.12 mm
Length450 mm
Barrel diameter—