This graph notes low variation (normal) in green and high, which “can be linked to breathing issues” in orange. The oxygen levels in your blood tend to remain relatively constant, even during ...

As of this week, all Fitbit Charge 3, Ionic, Versa, Versa Lite, and Versa 2 users will be able to use the recently announced Estimated Oxygen Variation graph in the Fitbit app. This feature has ...

This graph is another opportunity for us to provide more data to our users.” So while a large level of variation in blood oxygen COULD show sleep apnea – Fitbit won’t spell this out for you.