XOSS X1 Speed Cadence Sensor Cycling Computer Speedometer ANT+ Bluetooth Road Bike MTB Compatible For GARMIN iGPSPORT Bryton If you want to know the cadence and speed data at the same time,two sensors are necessary and cheaper? Please check whether your apps support both two sensors(cadence and speed) before you make orders Support Bluetooth ANT+ XOSS Cadence Sensor track your cadence and speed by earth induction, NO need MAGNETS. Cadence Sensor Mode Reinstall the battery until the blue 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 Red light flashes to indicate the speed mode. Spin the wheel and search for the sensor using ANT+ or Bluetooth device. Replaceable Battery The working time reach 400 hours,can be used continuously a year if you ride 1 hour a day. Please remove the battery insulation film in the cadence before connecting the cadence sensor. No recharging! Sleek, Lightweight Design Sensors weigh only 10 grams. Perfect for spin class or use with multiple bikes. Waterproof IPX7 Waterproof, enjoy your cycling every day in all weather. For Indoor Trainer Zwift, Tacx, Bkool For Cycling Computer Track and capture real time cycling speed cadence data on your Bike Computer. For Smart Phone Apps It can be connected to smartphone cycling Apps by bluetooth:Wahoo Fitness, Wahoo Utility, Openrider and bike trainer apps: Zwift, Tacx, Bkool. Please check whether your apps support both two sensors(cadence and speed) before you order sensors.