Garmin HRM Pro Plus Heart Rate Monitor 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. Depth: 12 MM Premium heart rate strap transmits real-time data over ANT+ connectivity & BLUETOOTH to communicate with Garmin GPS watches, bike computers & more Captures running dynamics such as vertical oscillation, ground contact time, stride length and more to improve your form Computes pace & distance for treadmill or indoor track workouts Stores heart rate data during swimming or other activities out of range, then automatically sends data to your compatible Garmin watch afterwards Activity tracking stores steps, calories, intensity minutes & heart rate, then updates all Garmin devices via Garmin Connectâ„¢ app & TrueUp feature Small, lightweight heart rate monitoring module is no wider than the width of the soft, comfortable strap Tool-free quarter-turn battery door is easy to use & improves durability Battery life: up to 1 year Height: 1006 MM Width: 30 MM