Easily store your speed during the tour with the compact Garmin Speed Sensor 2. This speed sensor transmits real-time speed and distance data via ANT and BLUETOOTH to compatible devices such as Garmin bike computers or GPS watches. Set the wheel size manually in our online community, Garmin ConnectTM, or perform self-calibration with an Edge bicycle computer or compatible Garmin device. After setup, you get accurate speed and distance dates—even without pairing with a Garmin product. The speed sensor 2 automatically stores the distance at each exit and can therefore be used when planning service intervals Real-time speed and distance transmission via ANT and BLUETOOTH 5.0 to Garmin GPS bike computers, GPS watches and other compatible devices Record and store distance for analysis in Garmin Connect Automatic odometer, ideal for planning service intervals Compact design and easy to mount on a hub Color: Black Number of items: 1.0 Package Dimensions: 6.0 L x 16.6 H x 7.4 W (centimeters)