Track Proven The Rolex Cosmograph Daytona is a chronograph built for endurance and precision. Originally designed for professional racing drivers, it has become a symbol of performance and prestige. Monochrome Appeal This 2007 reference features a slate dial with contrasting sub-dials and a fixed bezel. The 40mm case is crafted from 18ct white gold and paired with an Oyster bracelet and Easylink Oysterlock clasp. Inside, the calibre 4130 automatic movement delivers a 72-hour power reserve.