NEW Features: Your Phone will receive the speed and cadence information from this items .Using wireless Bluetooth Smart technology the sensor communicates your tire rotation and the pedal rotation (Speed and Cadence)Easy to mount; mounting accessories includedCompatible with iPhone 6/6 plus， iPhone 5s/5c/5， iPhone 4s ， IPad 3 IPad 4 IPad air & IPad mini ， Samsung Galaxy S4 (V4.22) ， note 2 ， note 3 (V4.3) ，HTC one (V4.22) ，HTC butterfly (V4.22) ，others V4.3 etcBluetooth low energy (BT4.0)Tracks cycling speed， cadence， time and Calories burnt while you rideWork with most popular fitness APPWaterproofTransmission range: < 3MBattery: 1 x CR2032Color: Black Package Included: 1 Combo Sensor1 Wheel Magnet1 Crank Magnet2 Ties1 user manualhttp://contestimg.wish.com/api/image/rating?name=b426702c7b8911e68b9c065f903a9ac5.jpg&w=1000&h=1000&m=0&t=0