Omega
Omega Seamaster Bullhead Co-Axial Chronograph 225.12.43.50.01.001
The Omega Seamaster Bullhead Co-Axial Chronograph (reference 225.12.43.50.01.001) is a 43 mm stainless steel watch with a black dial.
Specifications
Case
- Reference
- 225.12.43.50.01.001
- Collection
- Seamaster
- Case size
- 43 mm
- Case material
- Stainless steel
Dial and bezel
- Dial
- Black
Movement
- Movement
- Automatic
Dial versions
This reference was made with these dials and finishes.
225.12.43.50.01.001 Black
Black
How it compares within the Seamaster family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 225.12.43.50.01.001 (This watch) | 43 mm | Stainless steel | Black | — | — |
| 225.12.43.50.02.001 | 43 mm | Stainless steel | Silver | — | — |
| 225.12.43.50.04.001 | 43 mm | Stainless steel | White | — | — |
| 522.12.43.50.04.001 | 43 mm | Stainless steel | — | — | — |
| ST146.011 | — | — | — | — | — |
About the Seamaster family
Seamaster is Omega's oldest current line name, first used in 1948. This general heading in the catalog holds Seamaster models that sit outside the named sub-families, mostly versions of the Seamaster Bullhead, a chronograph with its crown and pushers at the top of the case like a stopwatch.
The vintage Bullhead, ref. ST 146.011, dates from 1969, and Omega later revived the design in modern form with references such as 225.12.43.50. Dealers identify these pieces by reference and dial colour, and for the vintage model look closely at the originality of dial and bezel.
Quick answers
- What size is the Omega Seamaster Bullhead Co-Axial Chronograph 225.12.43.50.01.001?
- The Omega Seamaster Bullhead Co-Axial Chronograph 225.12.43.50.01.001 has a 43 mm case.
- What is the Omega Seamaster Bullhead Co-Axial Chronograph 225.12.43.50.01.001 made of?
- The case is stainless steel.
Catalog facts checked October 2026.