Put in other words, even an Apple Watch Series 0 is very close to a pulse oximeter anyway, and therefore the amount of power required to measure the O2 levels for the Series 6 may not be significantly higher power draw than measuring the pulse.
Open the Blood Oxygen app on your Apple Watch. Rest your arm on a table or in your lap, and make sure your wrist is flat, with the Apple Watch display facing up. Tap Start, then hold your arm very still during the 15-second countdown. At the end of the measurement, you receive the results. Tap Done.
In this tutorial, we'll show you how to measure blood oxygen levels with the Apple Watch Series 8. This feature is built into the watch and you don't have to
Lawsuit alleges Apple Watch's blood oxygen sensor 'racially biased'; accuracy problems reported industry-wide. Studies found that pulse oximeter devices are less accurate for dark skin tones.
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