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Omega Calibre 28.10 RA (342) Movement Specifications, Beat Rate & Dimensions |
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Technical Caliber Datasheet
| Manufacturer | Omega |
| Caliber Reference | Calibre 28.10 RA (342) |
| Movement Type | Bumper Automatic |
| Diameter (Lignes) | 12.5''' |
| Diameter (mm) | 28.1 |
| Movement Thickness | 4.8 |
| Jewel Count | 17 Jewels |
| Vibrations Per Hour | 19,800 BPH (2.5 Hz) |
| Balance Lift Angle | 42° |
| Power Reserve | 42 hours |
| Escapement Type | Lever bumper |
| Shock Protection System | Incabloc option |
| Production Era | 1943-1955 |
| Wristwatch Conversion Rating | Early Seamaster Bumper |
Historical & Mechanical Notes
The Omega Calibre 28.10 RA (342) is revered among horologists for its mechanical architecture and precision timing characteristics. Operating with an oscillation rate of 19,800 BPH and a 42° lift angle, this movement exemplifies vintage fine watchmaking standards.
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