Google Pixel Watch gains support for SpO2 (blood oxygen saturation) tracking
Amazon.com: Samsung Galaxy Watch 3 Stainless Steel (41mm) SpO2 Oxygen, Sleep, GPS Sports + Fitness Smartwatch, IP68 Water Resistant, International Model - No NFC SM-R850 (Fast Charge Cube Bundle, Mystic Bronze) :
Samsung Galaxy Watch 5 review: if it only had a better battery - The Verge
Samsung Galaxy Watch 3 Feature SPO2 Monitor And Fall Detection; Priced From RM1,699 | The AXO
Samsung finally enables blood pressure monitoring on the Galaxy Watch Active 2; functionality teased for the Galaxy Watch 3 too - NotebookCheck.net News
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