High Quality Waterproof: IPX7 Drop shock: 1.5m natural drop Weight: 30 g Dimensions: 11.4 x 7.3 x 2.4 cm Battery: 1 CR2032A battery required. (INCLUDED) Battery: 12 months ( 1 hr usage per day ) Working temperature: -10-50℃ Antena: Built-in Wireless transmission: Bluetooth 4.0 BLE, ANT+ 2.4G ANT + & BLUETOOTH COMPATIBLE TRANSMISSIONS - Connect sensor to your phones, bike computers or any other ANT+, Bluetooth devices indoor trainer, such as, Garmin EDGE5500/510/520/800/810/1000, Bryton & iGPSPORT. Using bike computer, speed sensor, cadence sensor immediately starts to record. When finished, you can view the results through STRAVA (running & cycling app) & your app. WIRELESS SENSOR - First use, will connect within 5 minutes otherwise will turn off automatically. Bluetooth will start when there is motion & auto sleep if not working for 2 minutes. EASY TO INSTALL - Fit the sensor to the bike, speed sensor goes on the front/rear wheel hub & the cadence goes on the peddle bars. The mounts supplied are rubber bands, easy to fit & strong.