CaliberDB

ETA 2401

Mechanical
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Notes

early fixed, later mobile stud carrier (cf. ETA 2391) differences not known between 2391, 2393, 2395, 2397, 2399, 2401, 2403, 2405

Dimensions

Width25.6 lignes (57.75 mm)
Height3.6 mm
Stem height1.4 mm
Hands (H × M × S)1.5 × 0.9 × 0.21 mm

Technical data

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

Complications

Self windingNo
Date No
Day No
HackingNo
ChronographNo

Mainspring

GR codeGR3295
Height1.3 mm
Thickness0.12 mm
Length320 mm
Barrel diameter9.5 mm