Precision on the Track The Rolex Cosmograph Daytona is the ultimate chronograph for those with a passion for driving and speed. Since its debut in 1963, it has become an icon of motorsport, renowned for its precision, reliability and instantly recognisable design. A benchmark in the world of racing watches. Two-Tone Chronograph Design This 2017 reference 116503 features a 40mm case crafted from a combination of Oystersteel and yellow gold. It is powered by the calibre 4130 automatic movement, offering a power reserve of approximately 72 hours. The Oyster bracelet is fitted with the Oysterlock clasp and Easylink extension system, ensuring comfort and security. A bold and versatile expression of the Daytona legacy.