Sea-Dweller
A 43 mm steel diver rated to 1,220 metres, with a helium escape valve.
Rolex introduced the Sea-Dweller in 1967 for divers who work for long periods in pressurised chambers. It was the first Rolex fitted with a helium escape valve.
This version is 43 mm wide and waterproof to 1,220 metres. The dial is black, and the words “Sea-Dweller” are printed on it in red.
It has a Cyclops lens over the date and the Glidelock extension clasp. Calibre 3235 is self-winding.
- Reference
- 126600
- Introduced
- 1967 (Sea-Dweller)
- Case
- 43 mm, Oystersteel
- Movement
- Calibre 3235, self-winding
- Power reserve
- About 70 hours
- Water resistance
- 1,220 m
- Functions
- Hours, minutes, seconds, date
- Notable
- Helium escape valve, black Cerachrom bezel



