Sea-Dweller

The Rolex Sea-Dweller Ref. 126603 represents the pinnacle of professional dive watchmaking rendered in Rolex's signature Oystersteel and yellow gold combination, a pairing that brings a touch of luxury to an instrument-grade tool watch.

Powered by the in-house Caliber 3235 with a 70-hour power reserve and Chronergy escapement, it delivers exceptional precision alongside the Sea-Dweller's legendary 1,220-meter water resistance and helium escape valve. The 43mm case is finished with a black ceramic bezel and clean black dial with no numerals, maintaining the watch's utilitarian purity while the two-tone construction elevates it beyond the purely functional.

The 126603 holds particular significance as the first Sea-Dweller to feature the gold and steel configuration, making it a landmark reference in the lineage of Rolex professional sports watches.