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Omega 283
Last updated: July 26, 2025
Brand
Caliber Number
283
Production Period
1949 – 1960
Lignes
13.3”’
Diameter
30.0 mm
Height
5.1 mm
Power Reserve
Unconfirmed
Frequency
18,000 bph (2.5 Hz)
Jewels
17
Escapement
Swiss Lever Escapement
Anti-Shock Device
Incabloc
Hand Count
3 (Hours, Minutes, Sweep Seconds)
Manufacture Region
Unconfirmed
Functions
Manual Winding, Sweep Seconds
Omega 283 Description
The Omega 283 is an early and significant evolution of the legendary 30T2 SC manual-wind caliber. Renamed in 1949, this 30mm movement with sweep-seconds powered countless Omega watches, including military-issue models, for over a decade. It is celebrated for its robust design, reliability, and accuracy, making it a cornerstone of Omega’s mid-century reputation.
