Follow up that for most diagnostic purposes, you don't really care about the specific spO2 precentage beyond "is it below 90" or not, for which the Apple Watch

Follow up that for most diagnostic purposes, you don't really care about the specific spO2 precentage beyond "is it below 90" or not, for which the Apple Watch is perfectly satisfactory: https://tidbits.com/2020/10/22/the-paramedics-guide-to-blood-oxygen-and-the-apple-watch-series-6/ https://tidbits.com/2020/10/22/the-paramedics-guide-to-blood...