Pulse Oximetry with new Apple Watch 6
This seems to be the year of smart watches adding O2 sensors. Garmin has a whole line of them from $200 to $1200. How does the Apple watch do in direct sunlight as in our cockpits? As a trial I bought an inexpensive smart watch from BangGood which worked fine for reading O2 but was basically unreadable in sunlight.
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