Polar CS speed sensor 2009

There are a range of factors that can affect your cycling speed. Obviously fitness is one of them, h

There are a range of factors that can affect your cycling speed. Obviously fitness is one of them, however, weather conditions and the varying gradients of the road play a huge part too. The most advanced way of measuring how these factors affect your performance speed is with the aerodynamic Wireless Polar CS speed sensor. * Measures your current, average and maximum speeds. * Track your average speed to see your progress and performance improve. * Light yet tough, and easy to attach.

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