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,
Galaxy Watch Active 2 Features - (SpO2) - Measure Blood Oxygen | Page 2 | XDA Forums
Samsung Galaxy Watch 5 Blood Oxygen SpO2 Accuracy Test With A Professional Oximeter ⌚⚡ - YouTube
The Google Pixel Watch's long-overdue blood oxygen tracking is finally here