Rolex Cosmograph Daytona 40 mm

The Cosmograph Daytona 40 mm, reference 126503-0003, is built in Yellow Rolesor with a yellow gold bezel and an Oyster bracelet. The black dial features golden counter rings that set off the chronograph subdials and small seconds, with a tachymeter scale on the bezel for measuring average speeds. Inside is the Rolex caliber 4131, a self-winding chronometer movement with 72 hours of power reserve. The case is 11.9 mm thick, fitted with a sapphire crystal, and water resistant to 100 meters.