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.