Engineered for Depth The Sea-Dweller was created for the most demanding underwater environments, a professional-grade instrument that has earned its place in the history of deep-sea exploration. This 43mm model reflects that tradition, combining strength with uncompromising accuracy. Its Oystersteel and yellow gold construction, paired with a black dial, underscores its commanding presence. Technical Assurance Powered by the calibre 3235 with a 70-hour power reserve, this reference features a rotatable 60-minute bezel and Glidelock clasp for security. The sapphire crystal ensures durability and performance.