Rolex Sea-Dweller 1665 Thin Case – Double Red Brown Dial – COSC –

ROLEX SEA-DWELLER 1665 DOUBLE RED WRITING LOW CASE BROWN DIAL

The Rolex Sea-Dweller ref 1665 is certainly the most representative of the brand when it comes to professional diving models.
It is equipped with the exclusive helium expulsion valve, essential during the decompression process after a deep dive.
Regular production began in 1971, although the first pre-series units were in production as early as '67. Initially equipped with the "double red writing" dial (until '77), it was then equipped with the white writing dial until the end of production.

This second-wrist Rolex Sea-dweller reference 1665 has the following features:

Low steel case
Double red writing
Brown dial
Chronometric certificate Cosc