The Rolex Cosmograph Daytona 126509-0003 is a luxurious timepiece that seamlessly blends elegance with high-performance functionality. Encased in 18K white gold, it features a sleek steel and bright black dial with snailed chronograph counters, 18K gold applique hour markers, and hands with a Chromalight display for enhanced legibility. The 40mm case is complemented by a polished 18K white gold bezel engraved with a tachymetric scale, ideal for measuring average speeds up to 400 units per hour. Powered by the self-winding Rolex Caliber 4131 movement, it offers a 72-hour power reserve and is water-resistant up to 100 meters. The watch is secured with an Oyster bracelet, featuring a folding Oysterlock safety clasp with an Easylink 5 mm comfort extension link for optimal comfort.