Rolex
deep-sea-fullset facture france

Men’s diving watch Rolex Sea-Dweller Deepsea, reference 126660, dated 2020, sold full set with original box, papers, and invoice (Rolex France AD). This iconic watch was brought into the spotlight by James Cameron, director of the blockbuster film Titanic, during his historic deep-sea dive into the Mariana Trench. Presented here in its “Dark Side” version (black dial with blue-glowing Chromalight indexes), the Deepsea remains faithful to Sea-Dweller heritage by omitting the Cyclops magnifier over the date window. The sapphire crystal is domed and anti-reflective, enhancing legibility of the black dial with white inscriptions, both on land and underwater. Water resistant up to 3,900 meters (12,800 feet).

This imposing model from the professional collection embodies Rolex’s most significant advances in underwater exploration. Crafted from 904L Oystersteel, the 44mm monobloc case is designed to withstand extreme depths and is equipped with a helium escape valve. This Sea-Dweller Deepsea is built to accompany you on all your diving and nautical adventures. Powered by Rolex’s most advanced movement to date, the in-house Caliber 3235 with 31 jewels, it beats at 28,800 vibrations per hour and is COSC-certified by the Geneva Observatory. It features a stop-seconds function (hack watch) for precise synchronization and displays the date via a non-magnified window. Once fully wound, it offers a power reserve of approximately 70 hours when stationary.

The dial features luminous Chromalight hour markers outlined in white gold, matching the blue-glowing hands in low light. The caseback is screw-down and engraved with "SEA-DWELLER 12,800 ft = 3,900 m ROLEX OYSTER DEEPSEA". The three-link Oyster bracelet, made of 904L steel, includes a Glidelock extension system allowing it to be worn over a wetsuit without tools. The watch comes with all original links and features a folding Oysterlock safety clasp with micro-adjustment notches for precise wrist fitting.

In terms of use, this robust and sizable watch is ideal for those looking for a professional diving tool, suited to harsh aquatic and physical environments. Shock-resistant and able to handle extreme temperatures, it inherits the legacy of Rolex’s legendary dive watches as used by COMEX—starting with the Submariner and Sea-Dweller models of the 1980s and 1990s.

From a collector's perspective, this timepiece belongs to the exclusive professional models that are always in high demand due to limited production. Sold full set with its box, documentation, warranty, bracelet links, and original invoice (from a single French owner who purchased it from an authorized dealer), this model is poised to appreciate in value thanks to its completeness and excellent condition—hallmarks of Rolex's rarest offerings.

You’ll find more information and articles about Rolex’s professional watch line and the Sea-Dweller in our blog section Mostra-Mag, as well as in the "Watch Stories" and "Brand Stories" categories.