60beat BLUE Bike - for iPhone and Bluetooth Smart compatible devices Bike sensor that sends speed and cadence information to your iPhone Using wireless Bluetooth Smart technology the sensor communicates your tire rotation and the pedal rotation (Speed and Cadence) The sensor works with many of the most popular iPhone cycling Apps Some of the Apps include, Strava Cycling, MapMyRide, Cyclemeter, Runtastic Road Bike and many more Products comes with needed parts including magnets, battery, ties and many of the apps are free.