Omega
Omega Seamaster 600 Ploprof 166.077
The Omega Seamaster 600 Ploprof (reference 166.077) is a stainless steel watch. It is water resistant to 600 m. It was introduced in 1970.
Specifications
Case
- Reference
- 166.077
- Collection
- Seamaster Ploprof
- Case material
- Stainless steel
- Water resistance
- 600 m
Production
- Production
- 1970 – today (vintage)
Dial versions
This reference was made with these dials and finishes.
166.077
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 |
|---|---|---|---|---|---|
| 166.077 (This watch) | — | 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 | — | — |
| 227.32.55.21.03.001 | — | O-mega Steel | Summer Blue | — | — |
| 227.90.55.21.01.001 | — | Titanium | Black | — | — |
| 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 600 Ploprof 166.077?
- It is water resistant to 600 metres.
- Is the Omega Seamaster 600 Ploprof 166.077 still in production?
- Vintage.
- When did the Omega Seamaster 600 Ploprof 166.077 come out?
- It was introduced in 1970.
- What is the Omega Seamaster 600 Ploprof 166.077 made of?
- The case is stainless steel.
Catalog facts checked October 2026.