The Cosmograph Daytona, introduced in 1963, was designed to meet the demands of professional racing drivers. With its highly reliable chronograph and bezel with tachymetric scale, it allows drivers to perfectly measure average speeds up to 400 kilometres or miles per hour, as they choose. An icon eternally joined in name and function to the high-performance world of motor sport. The Cosmograph Daytona was designed as a high-precision personal timing tool for drivers in endurance races. Rolex resorted to pioneering yet elegantly simple engineering, by incorporating fewer components than in a standard chronograph and enhance reliability. The central sweep seconds hand allows an accurate reading of 1/8 second, while the two counters on the dial display elapsed time in hours and minutes. Drivers can accurately map out their track times and tactics without fail: the Daytona is a watch for winners.