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Omega

Omega Seamaster 300 Master Co-Axial 41 Titanium 233.90.41.21.03.001

The Omega Seamaster 300 Master Co-Axial 41 Titanium (reference 233.90.41.21.03.001) is a 41 mm titanium watch with a blue dial. It runs on the automatic caliber 8400 with a 60-hour power reserve and is water resistant to 300 m. It is no longer in production.

Specifications

Case

Reference
233.90.41.21.03.001
Collection
Seamaster 300
Case size
41 mm
Case material
Titanium
Case shape
Round
Crystal
Sapphire
Water resistance
300 m
Bracelet / strap
Titanium bracelet

Dial and bezel

Dial
Blue
Bezel
Rotating dive bezel (Liquidmetal/ceramic)

Movement

Movement
Automatic
Caliber
8400
Power reserve
60 hours
Frequency
25,200 vph
Jewels
38
Functions
Time only, Dive bezel

Production

Production
Discontinued

How it compares within the Seamaster 300 family

Side by side with other references in the same collection, from the catalog.

ReferenceSizeMaterialDialCaliberYears
233.90.41.21.03.001 (This watch)41 mmTitaniumBlue8400—
165.014—Stainless steel—5521962–
165.024—Stainless steel—5521964–
166.024—Stainless steel—5651967–1969
233.30.41.21.01.00141 mmStainless steelBlack84002014–2021
233.32.41.21.01.00141 mmStainless steelBlack84002015–
234.10.39.20.01.00139 mmStainless steelBlack88062017–
234.30.41.21.01.00141 mmStainless steelBlack89122021–
234.30.41.21.03.00141 mmStainless steelBlue89122021–

About the Seamaster 300 family

The Seamaster 300 was introduced in 1957 as Omega's first professional dive watch, alongside the Speedmaster and Railmaster. Vintage references such as the 165.024 and 166.024 of the 1960s are among the most collected Omega divers.

In 2014 Omega relaunched the model with a 41 mm case, a ceramic bezel with a Liquidmetal scale and caliber 8400, and in 2021 updated it with Master Chronometer caliber 8912 under refs. 234.30.41.21. Versions in Sedna gold, bronze gold and platinum also exist. Dealers separate vintage from modern first, then identify the generation by reference, caliber and dial, and check the condition of the vintage lume and bezel.

Quick answers

What size is the Omega Seamaster 300 Master Co-Axial 41 Titanium 233.90.41.21.03.001?
The Omega Seamaster 300 Master Co-Axial 41 Titanium 233.90.41.21.03.001 has a 41 mm case.
What movement does the Omega Seamaster 300 Master Co-Axial 41 Titanium 233.90.41.21.03.001 use?
It uses the automatic caliber 8400, with a 60-hour power reserve.
How water resistant is the Omega Seamaster 300 Master Co-Axial 41 Titanium 233.90.41.21.03.001?
It is water resistant to 300 metres.
Is the Omega Seamaster 300 Master Co-Axial 41 Titanium 233.90.41.21.03.001 still in production?
Discontinued.
What is the Omega Seamaster 300 Master Co-Axial 41 Titanium 233.90.41.21.03.001 made of?
The case is titanium. Bracelet or strap: Titanium bracelet.

Catalog facts checked September 2026.