Seamaster 120M Automatic 36.25 2501.31.00 Reference 2501.31.00

Seamaster 120M Automatic 36.25 Stainless Steel / Silver

Overview

A 36.25 mm steel case with a silver dial defines the Omega Seamaster 120M Automatic 36.25 2501.31.00. Inside is the self-winding Omega calibre 1120, which has a 44 hour power reserve. The watch is water resistant to 120 metres. The model has one reference, 2501.31.00.

Case diameter: 36.25 mm
Movement: Calibre 1120
Water resistance: 120 m
Power reserve: 44 h

Specifications

Specifications from Omega and WatchBase. Last checked 6 October 2026. Sources

Case

Diameter: 36.25 mm
Material: Steel
Crystal: Sapphire
Water resistance: 120 m
Weight: 132 g

Dial

Colour: Silver

Movement

Calibre: Omega 1120
Type: Automatic
Power reserve: 44 h

Bracelet or strap

Bracelet or strap: Bracelet: Steel
Clasp: Sliding clasp

Not yet recorded: thickness, lug width, lug-to-lug, case back, shape, indexes, hands, functions, years.

Sources

Omega: case, water resistance, dial, movement, bracelet. View sources
WatchBase: case, water resistance. View sources

Missing values are shown as not yet recorded, never estimated. How we source our data

MovementOmega calibre 1120Specifications and every watch that uses it

Seamaster 120M Automatic 36.25 2501.31.00 questions

What size is the Omega Seamaster 120M Automatic 36.25 2501.31.00?

The Omega Seamaster 120M Automatic 36.25 2501.31.00 has a 36.25 mm case.

What movement does the Omega Seamaster 120M Automatic 36.25 2501.31.00 use?

It uses the Omega calibre 1120.

What is the Omega Seamaster 120M Automatic 36.25 2501.31.00 case made of?

The case is steel.

Is the Omega Seamaster 120M Automatic 36.25 2501.31.00 water resistant?

It is rated to 120 m.