This product Contains a Button/Coin Battery. A lithium battery can cause severe or fatal injuries in 2 hours or less if it is wallowed or placed inside any part of the body. Keep batteries out of reach of children. If you think batteries may have been swallowed or placed inside any part of the body, seek immediate medical attention.
The NEW Wahoo RPM Cadence Sensor is a wireless, magnet-less, lightweight, cadence sensor. This sleek, Bluetooth 4.0 and ANT+ enabled cadence sensor is easy to install, connects wirelessly to your iOS or Android device, and displays your cadence data (through the free Wahoo Fitness App or your favourite cycling app).