When you ride on the road there are many variables that can affect your success. One of these is your fitness level however weather and road conditions also are factors. The best, most innovative way to track your speed performance is to use the Polar Wireless CS Speed Sensor.
When you compete in cycling you are always out for the best time and to determine your speed and how well you will maintain that speed you need to train knowing your speed. This lightweight and aerodynamic wireless sensor will receive your present as well as average speed for optimal race day training results.