Never miss a beat with the HRM-Pro Plus premium chest strap heart rate monitor Featuring dual transmission, it provides accurate heart rate data to Garmin devices, compatible fitness equipment, the Tacx Training app and other apps It also captures running dynamics — including vertical oscillation, ground contact time, stride length and more — to help you improve your form and enable running power on your compatible Garmin watch Plus, for indoor runs, HRM-Pro Plus sends pace and distance A tool-free quarter-turn battery door makes for easy battery changes and improved durability 
