CaliberDB

ETA 2390

Mechanical
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Notes

early fixed (Fig.1), later mobile stud carrier (Fig.3) differences not known between 2390, 2392, 2394, 2396, 2398, 2400, 2402, 2404

Dimensions

Width23.3 lignes (52.56 mm)
Height3.6 mm
Stem height1.2 mm
Hands (H × M × S)1.5 × 0.9 × 0.21 mm

Technical data

Beat rate18,000 vph (2.5 Hz)
Lift angle52 °
Power reserve47 h
Jewels—
Shock protection—
Mobile stud carrierNo

Complications

Self windingNo
Date No
Day No
HackingNo
ChronographNo

Mainspring

GR code—
Height1.32 mm
Thickness0.12 mm
Length320 mm
Barrel diameter—