Polar CS SPEED SENSOR W.I.N.D. AND DUAL LOCK BIKE MOUNT SET

The CS Speed Sensor WIND will show just how swift you finish a track and how far you've traveled. It's light, aerodynamic and wireless so it won't get in the way of your training. Just attach the device to your bike's stem or handlebar using the Dual Lock Bike Mount Set and it's ready to compute your output.