It is the watch if you think of speed and is the ultimate benchmark for motor sport enthusiasts. It is the iconic watch among chronographs. There is no need for a detailed explanation - we are talking about the Rolex Perpetual Cosmograph Daytona that celebrated its 50th anniversary just in 2013. It is featured with a tachymeter bezel that measures speed. So this noble sports chronograph provides time measurement to 1/8 of a second. It also includes a 4130 calibre which is a mechanical high performance watch movement, created by Rolex.