Specialized's SpeedZone Sport Wireless provides all the data you need to quantify your rides in a neat, cordless package. Its easy-to-read, double-line display lets you quickly check speed, mileage and a whole host of other important functions. Plus, the SpeedZone's easy calibration makes setup a breeze and its interface is incredibly intuitive so you can spend more time pounding out the miles than trying to figure out how far you've ridden.