How do I track my estimated oxygen variation in the Fitbit app?
Fitbit adds blood oxygen tracking to its devices
Introducing Fitbit Sense: The Advanced Health Smartwatch Featuring Innovation in Stress Management, Heart Health, and Wellness - Fitbit Blog
SpO2, Heart Rate Variability | Fitbit Technology
fitbit on Twitter: "Can you track your SpO2❓O YES❗️This free SpO2 Signature clock face for smartwatches shows your nightly oxygen levels at a glance so you can see potential changes in your
Sense shows SpO2 data but not on Health metrics - Fitbit Community