Is it possible you're talking about blood oxygen saturation? http://www.cultofma...

		brandonb on May 11, 2017 \| parent \| context \| favorite \| on: Apple Watch can detect arrhythmia with 97% accurac... Is it possible you're talking about blood oxygen saturation? http://www.cultofmac.com/320322/apple-watch-sensors-are-capa...