Omega
Omega Seamaster 600 Ploprof ST166.0077
The Omega Seamaster 600 Ploprof (reference ST166.0077) is a stainless steel watch. It runs on the caliber 1002 and is water resistant to 600 m. It was made from 1970 to 1979.
Specifications
Case
- Reference
- ST166.0077
- Collection
- Seamaster Ploprof
- Case material
- Stainless steel
- Water resistance
- 600 m
- Bracelet / strap
- Isofrane
Movement
- Caliber
- 1002
Production
- Production
- 1970–1979
Dial versions
This reference was made with these dials and finishes.
ST166.0077
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 |
|---|---|---|---|---|---|
| ST166.0077 (This watch) | — | Stainless steel | — | 1002 | 1970–1979 |
| 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 | — | — |
| 227.32.55.21.03.001 | — | 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– |
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
- What movement does the Omega Seamaster 600 Ploprof ST166.0077 use?
- It uses the caliber 1002.
- How water resistant is the Omega Seamaster 600 Ploprof ST166.0077?
- It is water resistant to 600 metres.
- Is the Omega Seamaster 600 Ploprof ST166.0077 still in production?
- No. It was made until 1979.
- When did the Omega Seamaster 600 Ploprof ST166.0077 come out?
- It was introduced in 1970 and made until 1979.
- What is the Omega Seamaster 600 Ploprof ST166.0077 made of?
- The case is stainless steel. Bracelet or strap: Isofrane.
Catalog facts checked October 2026.