When I bought my polar the first day it was working fine, the heart rate readings where from 85bpm too 161bpm and burned around 500 calories in 1 hour but then it started to work weird it was giving me a 73bpm too 130bpm doing the same workout in the same intensity and burned 200 calories in 1 hour, I changed the battery…
I bought my polar ft7 last Thursday and then I used it on friday, the readings of my heart rate where good from 90bpm too 150bpm and burned more than 500 calories in 1 hour and half but now doing the same exercise and the same intensity my heart rate readings are from 73bpm too 130bpm and burned 400 calories in 1 hour and…