How to use the Apple Watch 6 blood oxygen monitor – TechRadar

The main difference between the Apple Watch 6 and its predecessor is that Apples 2020 flagship smartwatch measures blood oxygen levels. Also referred to as SpO2, its a measure of the saturation of oxygen in red blood cells.
In recent months, the ability to measure blood oxygen has become an important feature, given the fact it has been found to be an early indicator of Covid-19
in some sufferers. How far wearables can help in this regard is in question, but that hasnt stopped SpO2 monitors fl…

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