Anecdotally I found it worthless anyway. I tried a variety of straps, tightness, positions, but I think the freckles on my white skin just confused it. Finger m

Anecdotally I found it worthless anyway. I tried a variety of straps, tightness, positions, but I think the freckles on my white skin just confused it. Finger monitors consistently have it at 98%+. Apple Watch: “Your Blood Oxygen content is 85-100%”. Thank you Apple, very cool. No real pattern to the large outliers, they’d happen at all times of the day, even with my girlfriend’s watch that I asked for a lend of.