Samsung finally enables blood pressure monitoring on the Galaxy Watch Active 2; functionality teased for the Galaxy Watch 3 too - NotebookCheck.net News
The Galaxy Watch 4's SpO2 sensor is almost on par with medical tools – Phandroid
How reliable is the SPo2 readings on the Galaxy Watch 4. I'm surprised to see it this low. Can cold environments cause stuff like this? : r/ GalaxyWatch
Oximeter vs Smartwatch: Can Wearables Track Blood Oxygen Reliably and Which One Should You Buy?
Do Samsung Galaxy Watch 4 and Watch 4 Classic have a SpO2 sensor? - Quora
Samsung Galaxy Watch4 Review: The best Galaxy Watch yet
Study shows Galaxy Watch 4 SpO2 sensor accuracy comparable to medical tools - SamMobile
Study Shows That the Galaxy Watch 4 SpO2 Sensor is Comparable to Medical Tools