The Rolex Cosmograph Daytona model 116503BKMDO is a luxury unisex watch featuring an elegant black mother of pearl dial adorned with diamonds. It boasts a stainless steel and 18kt yellow gold bracelet, including a fixed tachymeter bezel in yellow gold. Powered by the Calibre 4130 automatic movement offering precision chronograph functions for timing seconds, minutes, and hours across three sub-dials, along with a small second hand. Equipped with luminous hands, sapphire crystal glass resistant to scratches, screw-down crown, solid case back, round 40mm case size, Oysterlock clasp, and water resistance up to 100 meters (330 feet).