OCATO Fitness Tracker Bike Dual Mode Speed Sensor and Cadence Sensor Speedmeter for iPhone, Android and Bike Computers (ANT+ & Bluetooth) 1, Track and Capture Real-time Speed, Cadence and Distance on Your Smart Phone or Indoor Cycling Computer 2, Bluetooth Smart wireless data transmission and ANT+ for iPhone and Android Smartphone 3, ANT+ Technology Makes You Capture Cadence on your Favorite Indoor Cycling Platform. 4, Works Seamlessly with Apps Including Wahoofitness, Cyclemeter, Strava, MapMyRide, Runtastic Road Bike and Many More. 5, Turns smartphone into professional cycling computer, Easy to Fix it and Long Time Battery Life