Omega Calibre 671-681 Technical Data Sheet
Official Omega technical data sheet for automatic calibres 671 and 681, designed for slim ladies' models and smaller gents' watches (1963). Movement diameter 17.50 mm, height 4.30 mm (cal. 671) and 5.05 mm (cal. 681), 24 jewels, 45-hour power reserve, 19,800 A/h oscillation frequency, angle of lift 52°. Details movement construction, automatic winding mechanism, shock protection system (Incabloc), regulating device with movable stud holder, and jewelling specifications. Includes technical specifications table, movement photographs showing both calibres, and annotated cross-section diagram of the balance and regulating mechanism.
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Document Details
- Format
- Pages
- 16
- Size
- 1.1 MB
- Category
- Watchmaking