Extreme Engineering The Rolex Deepsea is a professional-grade dive watch built for the most demanding underwater conditions. Part of the Sea-Dweller family, it showcases Rolexs commitment to deep-sea exploration and technical mastery. Built for the Deep This reference, from 2021, features a 44mm Oystersteel case with a rotatable black bezel and D-blue dial. Powered by the calibre 3235 automatic movement, it offers a 48-hour power reserve and is fitted with an Oyster bracelet featuring Fliplock, Glidelock, and Oysterlock systems. A robust companion for the depths.