Fitbit’s new Estimated Oxygen Variation graph is now available to all Charge 3, Ionic, Versa, Versa Lite, and Versa 2 users.
This new feature was originally announced at Fitbit’s Fall 2019 launch event and began rolling out to some users in January.
The SpO2 monitoring utilises the red and infrared sensors on the back of the device to estimate the variability in your blood oxygen saturation level.
The graph, which users can see in the Fitbit app under the Sleep tile, approximates the changes in your blood oxygen saturation while you sleep.
Blood oxygen saturation measures the percentage of your blood that’s saturated with oxygen.
Typically, it’s at 95-100%, meaning the blood is carrying as much oxygen as it can.
If you stop breathing or have other lung issues, the saturation level can fall since less oxygen enters the body.
In general, variations should be low and seeing frequent, big variations could be a sign that you may be experiencing breathing disturbances during sleep.
Tags: data, Fitbit, health, oxygen, sleep, smart, Versa, watches, wearables