XOSS Bike Cadence Sensor Speedometer Strava BT Cycle Computer Wireless GPS Cadence Sensor Dual ANT + Wireless Compatible with G Bike Computers XOSS Cadence Sensor track the cadence and speed by earth induction, NO need MAGNETS, light weight and easy to install, the working time can reach 400 hours,can be used continuously a year if you ride 1 hour per day. Support BT and ANT+, works with phone via BT. Not only use it as cadence sensor, but also as speed sensor. Features: XOSS Cadence Sensor track the cadence and speed by earth induction, NO need MAGNETS. Light weight and easy to install. The working time can reach 400 hours,can be used continuously a year if you ride 1 hour per day. Support BT and ANT+. Not only use it as cadence sensor, but also as speed sensor. Specifications: Material: ABS Color: Black Standby Duration: 400hrs Operating Temperature: -20~50℃ Waterproof: IP67 Technology: for BT 4.0LE(Low energy), for ANT + Transmission: Wireless Battery: 1 * CR2032 (Included) Virtual Trainable APP: ZWIFT, BKOOL, TACX etc. Sensor Size: 35 * 27mm / 1.37 * 1.06in Sensor Weight: 9g / 0.32ounce Package Size: 130 * 100 * 50mm / 5.1 * 3.9 * 2.0in Package Weight: 50g / 1.76ounce Packing List: 1 * Bike Cadence Sensor 4 * Rubber Band 2 * Silicone Gasket