Versa 2 heart rate accuracy concern during workout

[mardawg]

i just completed a 25 minute incline walk on the treadmill, and 10 minutes in, my heart rate dramatically dropped from the 145-150 range to the 99-104 range, and stayed there for the rest of the workout. i'm not sure what could have made it do that? 

Moderator Edit: Clarified subject

[RicardoFitbit]

Hi @mardawg, welcome to the Community Forums.

Thanks for bringing this to our attention and for the details that were shared in your post. Heart-rate tracking can be affected by several factors including air temperature and device location on your arm. For more information about this, please check our help articles:

• How do I track heart rate with my Fitbit device?
• What factors can affect my heart-rate reading on my Fitbit device?

However, if your heart-rate tracker seems inaccurate after taking the recommendations into account, please reply with answers to the following questions so I can further investigate:

1. Were you wearing the Fitbit device particularly tight or loose?
2. What was the position of the Fitbit device on your wrist? 

I'll be waiting for your reply if further assistance is needed.