DAYTONA ROLEX WATCHES with a chronograph second hand, minute and hour totalisers and a calibrated bezel acting as a tachometer – The Rolex Cosmograph Daytona is the ideal Model for the active lifestyles of today. Recommended for those with a recognition of the need for precise timing. The automatic movement of the Cosmograph Daytona marks a revolution in the art of the chronograph. With a rolex balance wheel oscillating at a frequency of 4 Hertz, the movement has a power reserve of around 72 hours.