The Cosmograph Daytona combines a high-performance chronograph with Rolex's distinctive racing heritage. This 40mm model features an Oystersteel case and Oyster bracelet, a white dial with contrasting black counter rings and a black Cerachrom bezel with tachymetric scale. Powered by Rolex Calibre 4131, the self-winding mechanical chronograph offers approximately 72 hours of power reserve and water resistance to 100 metres. The Oyster bracelet completes the watch with its robust and versatile three-piece-link design.