Chronograph watch recommendation: Rolex Oyster Perpetual Cosmograph Daytona watch This new Rolex Oyster Perpetual Cosmograph Daytona watch is a tribute to the centennial celebration of the 24 Hours of Le Mans. Rolex has been the Official Timekeeper of the 24 Hours of Le Mans since 2001. The case of the Rolex Oyster Perpetual Cosmograph Daytona watch is made of 18K white gold with a diameter of 40mm. It is matched with a black Cerachrom ceramic outer ring, and the edge of the outer ring is decorated with a slender border also made of 18K white gold. The number "100" on the outer ring of the tachymeter is specially designed with red ceramic numbers, representing the 100th anniversary of this classic race. This watch is equipped with a 4132 movement, which can break through the traditional 12-hour timing mechanism and can provide continuous timing for up to 24 hours. This watch is certified by the top observatory as a precision timepiece. The brand pays tribute to this symbolic centennial celebration with this watch equipped with excellent performance.