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The Deepsea is the deepest-rated watch in the regular Rolex catalogue: 3,900 metres, a 44 mm case 17.7 mm thick, a 5.5 mm crystal and a ring of nitrogen-alloyed steel inside the case that takes the pressure. It arrived in 2008 as the Sea-Dweller Deepsea and became a collection in its own right in 2024. The blue-to-black dial honours James Cameron's 2012 dive to the bottom of the Mariana Trench.
Every Deepsea on Dialist is listed by a verified dealer and covered by buyer protection. Start with the James Cameron dial, or the Yellow Gold 136668LB if you want the heaviest Rolex made.
The 116660 of 2008 introduced the Ringlock system: a compression ring inside the case, a titanium caseback and a domed sapphire 5.5 mm thick, so the watch could be rated to 3,900 metres without becoming a brick. In 2014 Rolex added the D-Blue dial, a gradient from blue at twelve to black at six with the word Deepsea in green, to mark Cameron's solo descent of 26 March 2012.
The 126660 of 2018 moved the watch to the calibre 3235 and a wider bracelet, and the 136660 of 2022 slimmed the case sides and bezel. In 2024 Rolex dropped the words Sea-Dweller from the dial, renamed the collection Rolex Deepsea and added the 136668LB in yellow gold with a blue ceramic bezel and blue lacquer dial, a watch of more than 300 grams.
The Deepsea Challenge of 2022 is the 50 mm, 23 mm thick titanium version rated to 11,000 metres, a production descendant of the experimental watch strapped to Cameron's submersible. Rolex lists it under Deepsea; it is the only Rolex that has been to the deepest point in the ocean.
Deepsea or Sea-Dweller
The Deepsea is 44 mm and 17.7 mm thick, rated to 3,900 metres, with no Cyclops lens. The Sea-Dweller is 43 mm and about 15 mm thick, rated to 1,220 metres. On the wrist the Deepsea is a different category of watch; try one on before buying unseen.
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Dials
Black, or the D-Blue gradient that collectors call the James Cameron. The yellow-gold 136668LB has a plain blue lacquer dial. D-Blue carries a premium over black on every generation.
Materials
Steel for every reference from 2008 to today, yellow gold since 2024, and titanium for the Deepsea Challenge only. All have a titanium caseback, which is why the back is a different colour from the case.
Movements
The 116660 runs the calibre 3135 with 48 hours of reserve; the 126660, 136660 and 136668LB run the 3235 with 70 hours. The Deepsea Challenge has the 3230 and no date.
Size and weight
About 220 grams in steel, over 300 in gold, 250 for the titanium Challenge despite its 50 mm case. The bracelet has the Glidelock extension for a wetsuit. Lug to lug is around 51 mm, so wrists under seven inches will find it overhangs.
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