I would get the AW in a heart beat if it could read Blood Oxy (SpO2) Not for me, but my elderly parents whose sometimes are not getting enough oxygen. There are few offerings, only one it seems (by Phillips?), not as easy to use and costs twice as much as AW! Key about how SpO2 works is seeing the color of the blood though skin, usually though the finger which is not that thick and illuminated well. Some question if the location of sensors so close to light will work correctly. Not like FAKE system with a light right next to it, as some apps falsely claim with camera and is very dangerous (LED is wrong color and the camera is not specialized for function). This version or next??