The Rolex Yacht-Master 40 reference 126621 in Everose Rolesor (a combination of Oystersteel and Everose gold) features a striking chocolate dial. This model is powered by the Rolex in-house Calibre 3235, a Perpetual, mechanical, self-winding movement with approximately 70 hours of power reserve. The 40mm Oyster case is waterproof to 100 meters / 330 feet and is fitted with an Everose gold bidirectional rotatable 60-minute graduated bezel. The Oyster bracelet, also in Everose Rolesor, ensures comfort and durability. The highly legible Chromalight display with long-lasting blue luminescence ensures readability in all conditions.