Engineered for Depth The Sea-Dweller is a professional-grade divers watch, created to withstand the most demanding underwater conditions. Its design reflects Rolexs commitment to technical mastery and uncompromising performance. Robust and Precise This 43mm Oystersteel model features a black dial and rotatable bezel, complemented by an Oyster bracelet with Rolex Glidelock clasp. Powered by calibre 3235, it offers approximately 70 hours of power reserve, ensuring reliability at extreme depths.