Omega
Omega Seamaster Ploprof 1200M 227.90.55.21.01.001
The Omega Seamaster Ploprof 1200M (reference 227.90.55.21.01.001) is a titanium watch with a black dial. It is water resistant to 1200 m.
Specifications
Case
- Reference
- 227.90.55.21.01.001
- Collection
- Seamaster Ploprof
- Case material
- Titanium
- Water resistance
- 1200 m
Dial and bezel
- Dial
- Black
Movement
- Movement
- Automatic
Dial versions
This reference was made with these dials and finishes.
227.90.55.21.01.001 Black
Black
How it compares within the Seamaster Ploprof family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 227.90.55.21.01.001 (This watch) | — | Titanium | Black | — | — |
| 166.077 | — | Stainless steel | — | — | 1970– |
| 224.30.55.21.01.001 | 55 mm | Stainless steel | Black | 8500 | 2009– |
| 224.30.55.21.04.001 | — | Stainless steel | White | — | — |
| 224.32.55.21.04.001 | — | Stainless steel | White | — | — |
| 227.60.55.21.03.001 | — | Titanium/Sedna Gold | Blue | — | — |
| 227.90.55.21.04.001 | — | Titanium | White | — | — |
| 227.90.55.21.99.001 | 55 mm | Titanium | Grey | 8912 | 2015– |
| ST166.0077 | — | Stainless steel | — | 1002 | 1970–1979 |
About the Seamaster Ploprof family
The Ploprof, short for Plongeur Professionnel, was introduced in 1970 for professional divers. Its large monobloc case, with no removable caseback, was rated to 600 metres, and the bezel is unlocked with a red push-button so it cannot be moved by accident.
Omega reissued the design in 2009 as the Ploprof 1200M, and later versions in titanium use Master Chronometer calibers. The catalog includes vintage refs. such as 166.077 and modern references in steel and titanium. Dealers check the bezel lock, the condition of the mesh bracelet or strap and, on vintage pieces, the originality of the dial and hands.
Quick answers
- How water resistant is the Omega Seamaster Ploprof 1200M 227.90.55.21.01.001?
- It is water resistant to 1200 metres.
- What is the Omega Seamaster Ploprof 1200M 227.90.55.21.01.001 made of?
- The case is titanium.
Catalog facts checked October 2026.