Never miss a beat with the Garmin HRM Pro Plus premium heart rate monitor chest strap. 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 the HRM Pro Plus sends pace and distance. A tool-free quarter-turn battery door makes for easy battery changes and improved durability.