Legendary Diver's Watch The Submariner Date is a benchmark in dive watch design. With its unidirectional bezel and robust construction, it offers exceptional performance and unmistakable style both underwater and on land. Robust and Reliable This reference 116618LB features a 40mm case in 18ct yellow gold, with a blue dial and matching rotatable bezel. Powered by the calibre 3135 automatic movement, it offers a power reserve of approximately 48 hours. The Oyster bracelet includes a Rolex Glidelock extension system and Oysterlock clasp, ensuring a secure and adjustable fit for diving or daily wear.