I tested the Fitbit Sense and Versa 2 for heart rate accuracy. Both failed against Scosche Rhythm+ armband. : r/fitbit
Here's How Accurate The Fitbit Alta HR Actually Is
Fitbit heart rate explained: Accuracy, features and zones - Wareable
Investigating sources of inaccuracy in wearable optical heart rate sensors | npj Digital Medicine
Solved: How does Fitbit calculate Resting Heart Rate? - Fitbit Community
/cdn.vox-cdn.com/uploads/chorus_asset/file/19980316/Fitbit.jpg "The FitBit Alta HR helped me monitor my heart rate. I never want to see it again. - Vox")
The FitBit Alta HR helped me monitor my heart rate. I never want to see it again. - Vox
Fitbit heart rate explained: Accuracy, features and zones - Wareable
Users reporting inaccurate heart rate on Fitbit Sense. Is there a fix?
Solved: Charge 3 heart rate not accurate - Fitbit Community
How Accurate Is Fitbit Heart Rate? (What You Should Know)
Fitbit heart rate explained: Accuracy, features and zones - Wareable
Solved: Heart rate graph gaps - Page 2 - Fitbit Community
Don't bank on heart rate accuracy from your fitness tracker - CBS News
Solved: Heart rate monitor not accurate during exercise - Page 6 - Fitbit Community
Fitbit Versa 3 In-Depth Review | DC Rainmaker
Heart Rate Accuracy Test for Fitbit Versa 3 vs Garmin Venu SQ | Review and Comparison - YouTube
Fitbit Sense Heart Rate Accuracy (Test / Review) - YouTube
The FitBit Alta HR helped me monitor my heart rate. I never want to see it again. - Vox
Heart rate accuracy - Fitbit Community
Fitbit heart rate not working or inaccurate? Let's fix it - MyHealthyApple
Fitbits, other wearables may not accurately track heart rates in people of color
Fitbit Inspire 2 Review | Tested by GearLab
/cdn3.vox-cdn.com/uploads/chorus_asset/file/2447680/DSCF5750.0.jpg "Fitness trackers aren't very accurate at measuring heart rate — and that can be dangerous - The Verge")