About this product:Bluetooth 4.0 and ANT+ dual protocol: This cadence/speed sensor supports devices and apps that collect speed or cadence data via Bluetooth or ANT+. Track and capture real-time cycling speed data on your iPhone, Android or bike computer.Anti-Seismic and Waterproof: Our bike speed and cadence sensor accompanies you on bumpy road, tracks and captures cadence or speed data accurately. Make you know more about your cycling data, enjoy exercise effectively. IP67 waterproof grade, enjoy your bike every day in any weather. Suitable for outdoors.Magnet-free and easy to install: the speed sensor goes on the front/rear wheel hub and the cadence goes on the bottom brackets. Install the sensor in seconds with the included rubber snap rings (two sizes).Tips: Not for use on spinning bikes.App Compatible: Works with leading fitness apps including Zwift, Bkool, Bryton, XOSS, Cateye, Tacx, Wahoo, Garmin and others. Attention: ONE SENSOR can only select ONE MODE (speed or cadence) at a time. Collect speed and cadence data, you need to buy 2 pieces.Ultra small and long endurance design: the size is only 9.5mm 29.5mm 38mm, weight only 9.2g. Does not affect the appearance of the bike and does not increase the cycling load. If you ride 1 hour a day, the standby time can reach up to 300 days.Product Bike Speed Sensor and Cadence Sensor Combo, Cycling RPM Cadence Sensor, Wireless Speed and Cadence Sensor with ANT+ Connectivity and Bluetooth Low Energy TechnologyMore Features:2 in 1 cadence and speed sensor: one sensor can only select one mode (speed or cadence) at a time. If you need to calculate cadence reading and speed reading at the same time, you need to order 2 speed cadence sensors. To switch between speed and cadence mode, you must reinstall the battery and flip the switch to the S or C position. See more details in the user manual.ANT+ and Bluetooth support: The sensors are compatible with all devices that support ANT+, such as Garmin, Bryton, Zwift, BKool, TACX and more. Bluetooth works with Strava, Runtastic road bike sports watches, etc.Lightweight: weight only 9.2g (with battery), does not affect the appearance of the bike and increases the burden of riding. Easily attach it to your bike with the included rubber elastic rings (two sizes). IP67 water rating, waterproof, dustproof. Track cadence and speed by terrestrial induction, NO magnets needed.Specifications:Material: ABS, PVC, plastic.waterproof: IP67.Weight: 9.2g.Size: 9.5*29.5*38.0MM.Voltage: 3V.Battery: 220mAh CR2032 battery button.Using time: 1000 hours for cadence / 700 hours for speed.Standby time: 300 days.Package list:1 x Speed Cadence Sensor (battery included).2 x rubber band.1 x battery.1 x curved rubber mat (for speed sensor).1 x flat rubber mat (for cadence sensor).1 x User Manual. Produced by YOUGANG