The Rolex Sea-Dweller Deepsea ref. 126660 is the second-generation Deepsea, introduced in 2018 with the upgraded Caliber 3235 movement and its 70-hour power reserve. The 44mm Oystersteel case on the Rolex Sea-Dweller uses the brands's Ringlock System to achieve a 3,900-meter (12,800-foot) depth rating. It comes in two dial variants: the classic black and the D-Blue gradient, often called the "James Cameron" after the filmmaker's 2012 Mariana Trench dive. The ref. 126660 bridges the gap between the standard 43mm model and the larger Deepsea Challenge. The Oyster bracelet features both Glidelock and Fliplock extension systems, giving divers tool-free adjustability over a wetsuit. ... read more