The Rolex Oystersteel Cosmograph Daytona represents the pinnacle of chronograph engineering. Its robust 40mm Oystersteel case features a screw-down caseback and crown with Triplock triple waterproofing, ensuring durability in demanding conditions. The striking black monobloc Cerachrom bezel with tachymetric scale combines aesthetic refinement with functional precision. Beneath the scratch-resistant sapphire crystal, the black dial showcases index hour markers and a sophisticated layout: centre chronograph seconds hand, 30-minute counter at 3 o'clock, and 12-hour counter at 9 o'clock. Powered by Rolex's manufacture Caliber 4131 self-winding movement, it delivers approximately 72 hours of power reserve. The three-piece solid Oyster bracelet with Oysterlock safety buckle and Easylink 5mm extension link provides comfort and security. Water-resistant to 100 metres, this timepiece epitomizes precision and prestige.