Anyone STILL having heart rate accuracy issues with their Fenix 6?

Hi all,

Super frustrated, but I am still having issues with my Fenix 6S and heart rate accuracy even with the 4.20 software update. I'm wondering if it's just me or what the deal is? I had a 5S Plus before this and had no issues doing the same activities so I really don't think it's user error. My heart rate hardly reads over 110 during really vigorous exercise when my heart rate is closer to 160+. I have tried wearing on the inside of my wrist, tried my other wrist with no luck. It consistently reads 80-110 bpm the whole time. I wouldn't have bothered to upgrade if I knew this was going to be an issue. I know that wearing a chest strap is the most accurate, but I don't like to have to wear it for all of my work outs and my old Fenix was totally fine as well as my apple watch before that. Any suggestions? 

Parents
  • I have similar issues off and on with Fenix 6 Sapphire.  The most common problem is erratic readings - jumping from 135 to 145 or even 155-170 and then back down over the space of 5-10 seconds.  So I started wearing HRM-Tri and never see that kind of behavior, so I think it was the watch, not my heart.  But now after ~6 weeks, the HRM-Tri suddenly stopped working (battery change didn't fix the issue).  I'm wishing I never gave up my FR 235 which did a much better job of HR monitoring, and even was able to monitor while swimming laps using a 3rd party app.  Other than that, the F6 is great for all the other features.

Reply
  • I have similar issues off and on with Fenix 6 Sapphire.  The most common problem is erratic readings - jumping from 135 to 145 or even 155-170 and then back down over the space of 5-10 seconds.  So I started wearing HRM-Tri and never see that kind of behavior, so I think it was the watch, not my heart.  But now after ~6 weeks, the HRM-Tri suddenly stopped working (battery change didn't fix the issue).  I'm wishing I never gave up my FR 235 which did a much better job of HR monitoring, and even was able to monitor while swimming laps using a 3rd party app.  Other than that, the F6 is great for all the other features.

Children
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