Brand | Omega |
Caliber Number | 8520 |
In-House | Yes |
Movement Type | Automatic |
Jewels | 28 |
Power Reserve | 50 hours |
Vibrations Per Hour | 25,200bph |
Hairspring | Silicon Si14 |
Shock System | Nivachoc |
Escapement | Co-Axial |
Features | Hours, minutes, date at 3:00 |
Country of Manufacture | Switzerland |
Known Models | 37.5mm Planet Ocean, Ladies Constellation, 34mm Aqua Terra (add yours in the comments below…) |
The Omega caliber 8520 is an in-house automatic movement found in smaller ladies and mid-size Omega watches.
In Omega’s own words:
Self-winding movement with Co-Axial Escapement for greater precision, stability and durability. Free sprung-balance system with silicon balance-spring. Automatic winding in both directions to reduce winding time. Rhodium plated finish with exclusive Geneva waves in arabesque.
Watches with this movement:
At the time of this post, Omega has 164 models with the caliber 8520. The image above is an 8250 example from a ladies 31mm Constellation watch. Some other models include:
- Aqua Terra (30mm)
- Aqua Terra (34mm)
- Constellation (27mm)
- DeVille Ladymatic (34mm)
- Planet Ocean (37.5mm)
Video Manual:
Additional Resources:
- Read more: Testing Omega’s Seamaster Aqua Terra
- Video: George Daniels, The Master Rests
Recent Comments
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