The Rolex Oystersteel Deepsea represents the pinnacle of professional diving watches, engineered for extreme underwater exploration. Its robust 44mm Oystersteel case features a screw-down back and crown with Triplock triple waterproofing, ensuring reliability at depths reaching 3,900 metres. The black dial showcases platinum-coated numerals beneath a scratch-resistant sapphire crystal, while the unidirectional Cerachrom bezel with platinum graduations provides precise timing. Powered by the Rolex Calibre 3235 movement with an impressive 70-hour power reserve, this timepiece delivers instantaneous date setting and stop-seconds functionality. The Oyster bracelet with Glidelock extension system and Oysterlock safety buckle combines comfort with security, making this an essential instrument for serious divers and collectors alike.