The Rolex© Cosmograph Daytona is the driver’s choice for performance, style, and distinction. Rolex has always set the pace as the sport of racing has surged forward. Rolex chronographs have adorned the wrists of record-breakers and champions since the early 1930s, and the Daytona was awarded as a trophy at the speedway it was named after. The Daytona’s perpetual self-winding mechanical chronograph was developed specifically as a driver’s watch, featuring the rare ability to simultaneously function as both a timepiece and a stopwatch. The Cosmograph Daytona’s bezel doubles as a tachymeter, measuring elapsed time over a given distance. This scale combines with the chronograph to provide the ability to measure speeds of up to 400 kilometers per hour. The Daytona's movement earned the Swiss Official Chronometer Testing Institute’s certification for high-precision.