Note: If users need to record the speed and cadence sensor data at the same time, two sensors are necessary and cheaper Features Wireless Connect: Bluetooth 4.0 / ANT+ Size: 8.85x29.8x38.3mm Data: Cadence/Speed Waterproof: IP67 Sensor: Geomagnetic Sensor Battery: 2032 Button Battery Weight: 9g(with battery) Battery Life: 400 hours Support Bluetooth & ANT+ Compatible with most ANT+ & Bluetooth 4.0 devices. Works with Zwift, Garmin, Bryton, iGPSPORT, Onelap, BKool, TACX, and more.Bluetooth connection works with smartphones & bike computers. For Smart Phone Apps Wahoo Fitness, ZWIFT, Onelap, Openrider, Cyclemeter For Bike Computer Garmin; Wahoo; IGPSPORT; Bryton For Indoor Trainer Tacx; Zwift; Bkool For Smart Watch Garmin Cadence Sensor Mode Reinstall the battery until the Red light flashes to indicate the cadence mode. Rotate the crank and search for the sensor using ANT+ or Bluetooth device. Speed Sensor Mode Reinstall the battery until the Green light flashes to indicate the speed mode. Spin the wheel and search for the sensor using ANT+ or Bluetooth device. Waterproof IP67, Excellent waterproof and dustproof performance enjoy your cycling every day in all weather. Package List Replaceable Battery The working time reach 500 hours, can be used continuously a year if you ride 1 hours a day. No recharging! (The new sensor comes with a battery insulation sheet that must be removed from the battery compartment before use.) Magene Mover H64 Heart Rate Monitor Bluetooth4.0 ANT + magene cadende/speed Sensor With Chest Strap Computer Bike Wahoo Garmin BT Sports Band