Shown: reference 233.20.41.21.01.001 · Photo: Omega
Omega

Seamaster 300 Master Co-Axial 233.20.41.21 Reference 233.20.41.21.01.001

Seamaster 300 Master Co-Axial Stainless Steel / Sedna Gold / Black / Bracelet

Overview

A 41 mm case with a black dial defines the Omega Seamaster 300 Master Co-Axial 233.20.41.21. The movement is the self-winding Omega calibre 8400, with a 60 hour power reserve. Water resistance is 300 metres. The model has 2 references, which differ in case material and bracelet.

Omega introduced the Seamaster 300 in 1957, and the brand describes it as its first professional divers' watch. About the Omega Seamaster 300

Case diameter
41 mm
14.65 mm thick
Movement
Calibre 8400
Water resistance
300 m
Power reserve
60 h

Specifications

Specifications from Omega and WatchBase. Last checked . Sources

Case

Diameter
41 mm
Thickness
14.65 mm
Lug width
21 mm
Material
Steel - Sedna gold
Crystal
Sapphire
Water resistance
300 m
Weight
181 g

Dial

Colour
Black

Movement

Calibre
Omega 8400
Type
Automatic
Power reserve
60 h

Bracelet or strap

Bracelet or strap
Bracelet: Steel - Sedna™ gold
Clasp
Foldover clasp with comfort setting

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

Sources

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

MovementOmega calibre 8400Specifications and every watch that uses it

Other versions of the Seamaster 300 Master Co-Axial 233.20.41.21

The Omega Seamaster 300 Master Co-Axial 233.20.41.21 covers 2 references, with a 41 mm case. All use the Omega calibre 8400.

Compare all 2 references in a table
References of the Omega Seamaster 300 Master Co-Axial 233.20.41.21, with dial, case material, size and production years
ReferenceDialCaseSizeProduced
233.20.41.21.01.001BlackSteel - Sedna gold41 mm–
233.20.41.21.01.002BlackSteel - yellow gold41 mm–

Seamaster 300 Master Co-Axial 233.20.41.21 questions

What size is the Omega Seamaster 300 Master Co-Axial 233.20.41.21?

The Omega Seamaster 300 Master Co-Axial 233.20.41.21 has a 41 mm case.

What movement does the Omega Seamaster 300 Master Co-Axial 233.20.41.21 use?

It uses the Omega calibre 8400.

What is the Omega Seamaster 300 Master Co-Axial 233.20.41.21 case made of?

Its references have cases in steel - Sedna gold and steel - yellow gold.

Is the Omega Seamaster 300 Master Co-Axial 233.20.41.21 water resistant?

It is rated to 300 m.

How many Omega Seamaster 300 Master Co-Axial 233.20.41.21 references are there?

Our database lists 2 references.

About the Omega Seamaster 300

Omega introduced the Seamaster 300 in 1957, and the brand describes it as its first professional divers' watch. Omega refers to the 1957 original as a 'trilogy' model. The current Seamaster 300 sits among Omega's heritage models as a vintage inspired design, with the distinctive Seamaster 300 dial of triangular hour markers and large Arabic numerals, and the latest models reintroduce the lollipop hand. Every model in today's catalogue uses a 41 mm case, offered in stainless steel, Bronze Gold, yellow gold and platinum, with automatic Co-Axial Master Chronometer calibres 8912 or 8913.

Sources: Seamaster 300 catalogue, Omega