Fitbit Charge 6 vs Garmin Vivosmart 5: tech comparison

[@vc9105]

Which has better accuracy. I have a Fitbit charge 6. I find it not to be very accurate at all. When performing exercises where your arms are swinging the heart rate is totally off. Same with running and walking.

[@Gabkicks]

I just bought one but now I am worried about accuracy. Thinking about returning it B4 taking it out of the box