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    • Polar CS Series Speed Sensor Magnet Set

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      • We’re very sorry but we don’t know when this item will be back in stock.
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