Omega · Manual Wind
321 B
The column-wheel chronograph Omega put back into production in 2019, fifty years after retiring the original. The 321 descends from the CH 27 architecture Omega developed with Lemania in the 1940s, and ran the Speedmaster from the CK2915 of 1957 until the 861 replaced it in 1968. The reissue is assembled in a dedicated atelier in Bienne, a couple of thousand a year at most.

- Winding
- Manual Wind
- Power Reserve
- 55 hours
- Frequency
- 18,000 vph (2.5 Hz)
- Diameter
- 27 mm
Watches with this movement
4
Omega
Speedmaster 321 38.6
311.50.39.30.01.001 · 38.6 mm

Omega
Speedmaster Moonwatch 39.7 321
311.30.40.30.01.001 · 39.7 mm

Omega
Speedmaster Professional Moonwatch 321 Platinum / Black / Alligator
311.93.42.30.99.001 · 42 mm

Omega
Speedmaster Professional Moonwatch 321 Platinum / Black / Bracelet
311.90.42.30.99.002 · 42 mm
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