The Rolex Sea-Dweller in 43mm yellow Rolesor combines 904L Oystersteel with 18K yellow gold for a striking two-tone aesthetic. The robust case features a screw-down back and crown with Triplock triple waterproofness, rated to an impressive 1,220 meters (4,000 feet)—ideal for serious diving and water sports. The unidirectional rotating bezel showcases a scratch-resistant Cerachrom ceramic insert with yellow gold coated graduations, while the black dial is framed by blue Chromalight hour markers for enhanced legibility in low-light conditions. A sapphire crystal with Cyclops lens magnifies the date window for easy reading. Powered by Rolex's calibre 3235 self-winding movement, this timepiece delivers approximately 70 hours of power reserve. The yellow Rolesor Oyster bracelet features flat three-piece links and is secured with a folding Oysterlock safety buckle equipped with the Glidelock extension system and fliplock extension link—allowing comfortable wear over wetsuits. A professional-grade instrument that seamlessly transitions from ocean depths to everyday elegance.