Carol B. wrote:
I guess if all depends on your needs, Jeff. I need to monitor my SPO2 at night. This feature allows me to do that. It provides information I can share with my doctor. I do not find it irrelevant but I do understand it may be that for the majority of Apple Watch wearers.
The Apple Watch feature, when it was available, never monitored SPO2 continuously, it only measured it on demand. There are many devices that do monitor it continuously, such as the OuraRing that I have. And there are standalone medical quality devices that will both monitor and alarm, if you have a condition that can result in low blood oxygen.
Even the Watch ECG function is rather primitive; the Kardia series of monitors are much more useful in reporting arrhythmia, and can detect more abnormalities than just afib. I’ve had situations where my watch said “Normal Sinus Rhythm" but my Kardia reported other abnormalities even in “one lead” mode, and the newest model reports 6 leads, and provides an analysis of the results.