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- ETA Cal. 2640 - Yoke spring
Brand | ETA |
---|---|
Calibre | ETA 2640 |
International reference | 440 |
Compatibility | 2641-2648-2650-2651-2658-2660-2661-2668-2670-2671-2675-2678 |
State | Never used |
Year of production | 1971 - 1980 |
Caliber height | 3.50 mm |
Frequency | 21'600 Bpm |
Lift | 53° |
Power reserve | 48h |
Ruby | 17 |