Fitbit heart rate monitor in-depth: Accuracy, features and zones explained
The most common Fitbit problems and how to fix them - Android Authority
My heart rate monitor just stopped working one day, no light in the LED on the back. This also means that sleep tracking died. Anybody got any hints? Tried restarting the watch
Fitbit Versa Lite Edition Smartwatch | Shop
Fitbit heart rate not working or inaccurate? Let's fix it - MyHealthyApple
HR not tracking/lights stopped flashing - Page 9 - Fitbit Community
Fitbit heart rate not working or inaccurate? Let's fix it - MyHealthyApple
Solved: Versa black screen - Fitbit Community
What to do if Fitbit Heart Rate Not Working - Missing Heart Rate