Features1ANT+ protocol compatible with for GARMIN sports watch/stopwatch/Bryton/IGPSPORT/ZWIFT/ONELAP/BKOOL/TACX and other virtual cycling training software. 2Bluetooth protocol compatible with for Songtuo Bluetooth sports watch/Walker/Qij/Blackbird Ride/Tulip Sports/STRAVA 3Cadence sensor mode, reinstall the battery, the red light is on to indicate the cadence mode. At this time, it can be searched as a cadence sensor by Bluetooth or ANT+ devices. It is installed on the inner side of the left crank. 4Speed sensor mode, reinstall the battery, the green light is on to indicate the speed mode. At this time, it can be searched as a speed sensor by Bluetooth or ANT+ devices. Install the sensor on the front wheel hub. 5It is a twomode cadence sensor that can track and capture speed data on the bicycle.SpecificationItem Type: Bike Speed and Cadence SensorMaterial: ABSColor: BlackBattery: 2032 Group Button Cell 220mAh CR2032(Included)Cruising Ability: 600h(Cadence)/400h(Speed)Standby Time: 300hProtection Level: IP67Compatible Bluetooth Protocol: for Garmin/Wahoo/Zwift/Tacx/Bryton/Walker/BlackbirdProtocol Standard: Support ANT+ and Bluetooth dual protocol and appsIndicator Status/Equipment Status:Green Light Flicker/Cadence ModeBlue Light Flicker/Speed ModeRed Light Flicker/Battery is lower than 20%Weight: Approx. 27g/1ozPackage List1 x Sensor2 x Rubber Band1 x Flat Rubber Pad1 x Instruction