![Justin Merrigan on Twitter: "Really impressed with Garmin Fenix6 heart rate compared to Polar H10. I had the strap synced to a Polar Vantage. Large differences in ascent and descent (Garmin closer Justin Merrigan on Twitter: "Really impressed with Garmin Fenix6 heart rate compared to Polar H10. I had the strap synced to a Polar Vantage. Large differences in ascent and descent (Garmin closer](https://pbs.twimg.com/media/FThpVKOXEAEq-KH.jpg)
Justin Merrigan on Twitter: "Really impressed with Garmin Fenix6 heart rate compared to Polar H10. I had the strap synced to a Polar Vantage. Large differences in ascent and descent (Garmin closer
![Polar H10 Heart Rate Monitor Chest Strap - ANT + Bluetooth, Waterproof HR Sensor for Men and Women (NEW) Polar H10 Heart Rate Monitor Chest Strap - ANT + Bluetooth, Waterproof HR Sensor for Men and Women (NEW)](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/S/aplus-media-library-service-media/bbdd0622-af5e-4614-92f6-bb4c07c5180f.__CR0,0,1940,600_PT0_SX970_V1___.jpg)
Polar H10 Heart Rate Monitor Chest Strap - ANT + Bluetooth, Waterproof HR Sensor for Men and Women (NEW)
![Polar H10 Heart Rate Monitor Chest Strap - ANT + Bluetooth, Waterproof HR Sensor for Men and Women (NEW) Polar H10 Heart Rate Monitor Chest Strap - ANT + Bluetooth, Waterproof HR Sensor for Men and Women (NEW)](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/61x7I9X2tNL._AC_UF1000,1000_QL80_.jpg)