Diving Heritage The Submariner Date is a cornerstone of Rolexs professional watch collection. Designed for deep-sea exploration, it combines technical excellence with a timeless aesthetic that has made it a favourite both in and out of the water. Robust and Reliable This reference 16613 features a 40mm case and is driven by the calibre 3135 automatic movement, offering a 48-hour power reserve. The blue dial and matching 60-minute rotatable bezel create a vivid contrast, while the Oyster bracelet with Oysterlock clasp ensures durability and comfort.