I tested the Fitbit Sense and Versa 2 for heart rate accuracy. Both failed against Scosche Rhythm+ armband. : r/fitbit
Fitbit heart rate not working or inaccurate? Let's fix it - MyHealthyApple
Versa 2 Heart Rate Monitor Not Working, Jobs EcityWorks
Fitbit heart rate not working or inaccurate? Let's fix it - MyHealthyApple
Alexa not working on your Fitbit? Follow these tips to fix it - MyHealthyApple
Amazon.com: Fitbit Versa 2 Health and Fitness Smartwatch with Heart Rate, Music, Alexa Built-In, Sleep and Swim Tracking, Black/Carbon, One Size (S and L Bands Included) : Electronics
Fitbit heart rate monitor in-depth: Accuracy, features and zones explained
Fitbit Versa Smartwatch with heart rate monitoring review | Best Buy Blog