12-18-2022 13:23
12-18-2022 13:23
The difference of heart rate between charge 5 and 2 is so big, which one is accurate ?
12-18-2022 15:37
12-18-2022 15:37
Maybe one, maybe none. If you want to compare accuracy you need an accurate reference device like chest strap. Otherwise anyone's guess is just a guess.