Scott Stein/CNET
Blood oxygen measurements are recorded overnight if you toggle this in Samsung Health settings (snore detection is also a toggled setting). Blood oxygen measurements on watches aren’t medically precise, so I find they all vary way more than a standard pulse oximeter you’d wear on your finger. Maybe it could help determine if there’s a massive drop in blood oxygen? Again, hard to judge its use.
Blood pressure doesn’t yet work in the US, plus it needs Samsung phone (so does EKG)
Samsung has a way to check blood pressure on its watches using the optical heart-rate sensor, but it requires calibration against a blood pressure cuff. It’s cleared for use in a number of countries along with the EKG, but not yet in the US. On my review model, I was able to check my stress level… which is basically the non-FDA-cleared version of the blood pressure functions. It didn’t do much other than map my supposed stress on a color gradient from green to red.
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