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Omega 30T2 SC
Last updated: July 26, 2025

Brand
Caliber Number
30T2 SC (also Cal. 283)
Production Period
1940 – 1963
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
Variable (Incabloc on later models)
Hand Count
3 (Hours, Minutes, Sweep Seconds)
Manufacture Region
Unconfirmed
Functions
Manual Winding, Sweep Seconds
Omega 30T2 SC Description
The Omega 30T2 is a legendary 30mm manual-wind caliber family. The “SC” variant signifies “Seconde Centrale,” a sweep second hand. Introduced in the 1940s, this robust and highly accurate movement was a mainstay in classic Omega timepieces. Its superb design was the basis for many observatory chronometer champions and later evolved into the Cal. 28x series (e.g., Cal. 283), powering Omega watches for over two decades.
Watches Using The Omega 30T2 SC Caliber
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