Omega 354

Last updated: August 4, 2025
Close-up of a vintage Omega watch movement, showing intricate gears and mechanical components in gold tones.

Brand

Caliber Number

354

Production Period

1952 – 1955

Lignes

12.5”’

Diameter

28.1 mm

Height

5.5 mm

Power Reserve

Unconfirmed

Frequency

19,800 bph (2.75 Hz)

Jewels

17

Escapement

Swiss Lever Escapement

Anti-Shock Device

Incabloc

Hand Count

3 (Hours, Minutes, Sweep Seconds)

Manufacture Region

Unconfirmed

Functions

Automatic “Bumper” Winding, Sweep Seconds, Chronometer

Omega 354 Description

The Omega 354 is a highly regarded “bumper” automatic from the early 1950s. The hammer-like rotor bumps off springs to wind the watch. This caliber was famously used as the chronometer-grade engine in the very first Omega Constellation models and also in early Seamasters. Beating at 19,800 bph, it represents a pivotal and robust movement from Omega’s first generation of automatics with sweep seconds.

Watches Using The Omega 354 Caliber

A silver Omega Seamaster 2577 wristwatch with a beige dial, numeric hour markers at 12, 3, 6, and 9, and a brown leather strap. The words Omega Automatic and Seamaster are printed on the dial.
Seamaster

Omega Seamaster 2577

1948 - 1955
34mm
A wristwatch with a round black dial, gold hour markers and hands, silver casing, and a brown leather strap. The dial features the Omega logo, Automatic Chronometer, Constellation text, and references the classic Omega Constellation 2782.
Constellation

Omega Constellation 2782

1952-1956
34.5mm
A vintage Omega Seamaster 2767 wristwatch with a beige dial, gold markers, and a tan leather strap.
Seamaster

Omega Seamaster 2767

1952-1954
34mm