Track and capture real-time speed, cadence and distance on your iPhone, Android, and bike computer.Connects wirelessly via Bluetooth 4.0 and ANT to your iPhone, Android andor bike computer. The magnet will have to pass within 18 inch to get a readingWorks with Zwift and TrainerRoad Capture cadence on your favorite indoor cycling platform, No tangled wires on your bike to connect the sensor to your device.Also works with the free Wahoo Fitness app, Strava, RideWithGPS, MapMyRide, Cyclemeter, and more. Supported iDevices iPhone,iPhone 4S and newer,iPad,iPad 3rd gen and newer,iPod ,iPod Touch 5th gen