Omega 1120

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The Omega 1120 is a mechanical movement with automatic winding, ball-bearing rotor, hacking seconds, power reserve 44 hours. It is based on the popular ETA 2892-A2 calibre and was the predecessor of the Omega 2500 with co-axial escapement.

Used for example in the series Seamaster.

Cal. 1128

Calibre 1128 adds a 24 hour hand.

Cal. 2400

Calibre 2400 is a skeletonized version of Cal. 1120 with no date function.

Cal 2401

Calibre 2401 is a skeletonized version of Cal. 1120 with no date function in yellow gold.




Self-winding movement
Shock protection
Yoke winding system
Nivarox-1 balance spring
Etachron precision adjustment
COSC certified chronometer
Elaborate finishing


Central seconds
Rapid calendar advance
Hacking seconds


11½ lignes
D ? mm, H ? mm
23 jewels
28,800 A/h
Power reserve 44h

Production period: