Study shows Galaxy Watch 4 SpO2 sensor accuracy comparable to medical tools - SamMobile
Pulse Oximeter vs SpO2 monitor in Smartwatches: Blood Oxygen Track Reliability, Which One Should You Buy in COVID-19 times, Should you rely on smartwatches to measure blood oxygen,
Yesterday someone posted a cool blood oxygen graph that he got overnight. i have a galaxy phone and dont see this ability in my health app.. any idea? : r/GalaxyWatch