Garmin Bike Speed Sensor 2 Description: The Garmin Bike Speed Sensor 2 easily attaches to either front or rear hub with no need for magnets or other exposed parts. After calibrating the sensor on your Edge(R) cycling computer or the Garmin Connect app, the Bike Speed Sensor 2 will deliver accurate speed and distance at all times. Features: Wireless speed sensor for Garmin Edge computers and Smartphones Simplified, hub-mounted design mounts with ease ANT+ and Bluetooth Low Energy transmission connect to various training apps and compatible devices Rated for indoor and outdoor use Specifications: Connectivity: Ant+(R) & Bluetooth(R)