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Zenith Calibre 12-4-P Movement Specifications, Beat Rate & Dimensions |
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Technical Caliber Datasheet
| Manufacturer | Zenith |
| Caliber Reference | Calibre 12-4-P |
| Movement Type | Manual Dress/Military |
| Diameter (Lignes) | 12''' |
| Diameter (mm) | 26.75 |
| Movement Thickness | 3.9 |
| Jewel Count | 15 Jewels |
| Vibrations Per Hour | 18,000 BPH (2.5 Hz) |
| Balance Lift Angle | 50° |
| Power Reserve | 42 hours |
| Escapement Type | Straight line lever |
| Shock Protection System | Shock options available |
| Production Era | 1930-1950 |
| Wristwatch Conversion Rating | Classic 34-36mm vintage case |
Historical & Mechanical Notes
The Zenith Calibre 12-4-P is revered among horologists for its mechanical architecture and precision timing characteristics. Operating with an oscillation rate of 18,000 BPH and a 50° lift angle, this movement exemplifies vintage fine watchmaking standards.
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