Why does HRM Pro Plus not tracking RR intervals? - Accessories & Sensors - Running/Multisport - Garmin Forums
![Garmin HRM-Pro Plus - Premium Chest Strap for Recording Heart Rate and Running Efficiency Values such as Step Rate & Ground Contact Time, Treadmill, ANT+ & Bluetooth Technology, Black : Amazon.co.uk: Sports Garmin HRM-Pro Plus - Premium Chest Strap for Recording Heart Rate and Running Efficiency Values such as Step Rate & Ground Contact Time, Treadmill, ANT+ & Bluetooth Technology, Black : Amazon.co.uk: Sports](https://m.media-amazon.com/images/I/71EP+wyzlcL.jpg)
Garmin HRM-Pro Plus - Premium Chest Strap for Recording Heart Rate and Running Efficiency Values such as Step Rate & Ground Contact Time, Treadmill, ANT+ & Bluetooth Technology, Black : Amazon.co.uk: Sports
![Garmin HRV Inaccuracy: Forerunner 965 Optical Sensor VS Chest Strap HRV - Same Test : r/GarminWatches Garmin HRV Inaccuracy: Forerunner 965 Optical Sensor VS Chest Strap HRV - Same Test : r/GarminWatches](https://preview.redd.it/garmin-hrv-inaccuracy-forerunner-965-optical-sensor-vs-v0-fjxp6oq71uqb1.png?width=1080&crop=smart&auto=webp&s=d495e6b9ec0661e48af26a7204812817f1b49167)