I've always been fairly happy with my versa 2 in terms of heart rate accuracy. In the last month or so things seemed have gone a bit haywire In terms of getting false HR spikes during exercise. In the last couple of days I think I may have worked out that only using the 'run' mode (with or without GPS) is accurate and the other modes like workout etc are the ones causing the problem! I had this same issue with the original versa a couple of years ago, but I thought fitbit had solved it! Just wondering whether anyone else has this issue! It's a bit annoying but I would rather call every activity a 'run' and have reasonable HR data than get nonsense readings.
