Marine Precision This model draws on Rolexs long-standing connection to the sailing world, offering a blend of technical capability and refined design. Its bidirectional bezel and robust construction make it a versatile companion for both open water and everyday wear. Sporting Elegance This 2017 edition features a dial and 60-minute rotatable bezel, housed in a 40mm case. It is powered by the calibre 3135 automatic movement with a 48-hour power reserve and is fitted with an Oyster bracelet and Oysterlock clasp, delivering comfort, security, and a distinctly nautical aesthetic.