Created in 1967 with the professional divers of Comex, the Rolex Sea-Dweller answers a problem the Submariner did not solve: the ascent in a decompression chamber, where helium accumulated under the crystal can blow it off. Rolex's answer was the helium escape valve, a side valve that automatically releases the excess pressure.
Reference 126600, launched in 2017 for the model's fiftieth anniversary, takes the case to 43 mm, guarantees water resistance to 1,220 metres and brings back the Sea-Dweller name printed in red, a tribute to the first series. The Deepsea pushes water resistance to 3,900 metres thanks to its Ringlock system. Every watch sold by Francine Joaillerie, in Saint-Tropez, is authenticated and guaranteed.
| Reference | Water resistance | Diameter |
|---|---|---|
| 126600 | 1,220 metres | 43 mm |
| 126603 | 1,220 metres, yellow Rolesor | 43 mm |
| 126660 | 3,900 metres, Deepsea | 44 mm |
The Sea-Dweller is thicker, heavier and, on the older generations, has no Cyclops lens, since the crystal had to keep a constant thickness. It is aimed at those who want the tool in its most accomplished form. The Submariner remains the versatile choice, easier to wear every day.
No, it is only useful in saturation diving with a stay in a chamber. It is a technical marker of the model's authenticity more than an everyday function.
The 126600 of 2017 reintroduced the Sea-Dweller inscription in red on a single line, which had disappeared since the 1970s. Collectors nicknamed it the Single Red.
The Deepsea uses the Ringlock system, with a compression ring in nitrogen-alloyed steel and a titanium caseback, to withstand 3,900 metres. It is noticeably thicker on the wrist.
