Pulse Ox on Garmin wearables

A growing number of Garmin wearables wrist-based pulse oximetry, an estimation of the user’s peripheral blood oxygen saturation (SpO2%).

Examples of Garmin devices include: Fenix 6, Forerunner 945, Venu, vivoactive 4/4S, Approach S62, MARQ series, vívomove 3, vívomove Luxe, vívosmart 4, and others.

Devices use a combination of red and infrared lights with sensors on the back of the device to measure the percentage of oxygenated blood. 

Garmin notes that these are not medical devices and are not intended for use in the diagnosis or monitoring of any medical condition.