1This bike wireless sensor is made of qualified plastic material, sturdy and water-resistant, rainproof and durable 2It can collect speed and cadence, you can choose which one you need by pulling the toggle switch of the sensor 3Connect it via bluetooth to your smartphone, compatible with many APPs of phone and suitable for many brands of bike computers 4The sensor is very sensitive and ensures a non-stop and stable signal transmission, gives you a reliable data all the time 5With mounting accessories for firm installation. Lightweight and easy to install, no extra tools requiredFeatures:This bike wireless sensor is made of qualified plastic material, sturdy and water-resistant, rainproof and durable. It can collect speed and cadence, you can choose which one you need by pulling the toggle switch of the sensor.Connect it via bluetooth to your smartphone, compatible with many APPs of phone and suitable for many brands of bike computers. The sensor is very sensitive and ensures a non-stop and stable signal transmission, gives you a reliable data all the time. With mounting accessories for firm installation.Lightweight and easy to install, no extra tools required. Specifications:Condition: 100% Brand New and High QualityMaterial: PlasticColor: BlackBluetooth: 4.0 ANT+Waterproof: IP67Rated Voltage: 3VUsing Time: 600 hoursStandby Time: 300 Measuring Scope: 0-90km/h 0-200rpmPower Supply: 1 x Built-in CR2032 battery Size: Approx. 38 x 29.5 x 9.5mm / 1.5 x 1.2 x 0.4inchWeight: Approx. 32gCompatible Model: for Jiaming bairuiteng bicycle code meter Package Included:1 x Bike Wireles