Pulse oximeter on a smartwatch: What is it, and why does it matter?
Garmin Forerunner 255S Music GPS Running Smartwatch, Battery Upto 12 Days, HeartRate Variability & Advanced Sleep Monitoring, SPO2 & Stress Monitoring,Performance Condition with Black Band : Amazon.in: Electronics
Best Smartwatches for Measuring sPo2 Levels
Despite the SpO2 / pulse ox being not for medical use, I'm still disappointed in its accuracy. The pulse oximeter on my 245 is consistently out by 7-15%. Pretty much useless, even
Pulse Ox readings are NOT accurate during sleep : r/GarminFenix
Pulse Ox Acclimation on Your Garmin Watch - YouTube