Garmin Speed Sensor 2 Save your speed during the ride with this easy-to-mount speed sensor. Magnets or other accessories are not required. The sensor is quick to install and easy to maintain. It can also be easily used on different bikes. The speed sensor 2 is mounted on one of the wheel hubs. Set the wheel size manually to the one in Garmin Connect or perform a self-calibration with an Edge bike computer or compatible Garmin device. Once set up, you'll always get accurate speed and distance data - even without pairing with a Garmin product. ANT+ connectivity and Bluetooth Low Energy enable synchronization with Garmin Connect and other training apps, compatible devices and fitness equipment. This provides you with comprehensive data for indoor training and outdoor tours. The speed sensor 2 automatically saves the distance for each ride and can therefore be used when planning service intervals.