Hello @JeremyHumboldt
Unfortunately the SpO2 function on the Charge 5 only measures at night when you're asleep and gives one percentage figure for that period. It isn't possible to measure it on demand like other watches can.
I hope that helps a bit, although it's probably not the answer you'd like.
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Best AnswerOh, @JeremyHumboldt please use the 3 dots at the top right of your reply box and choose Edit, to edit out your address and phone number from your reply. You have to be careful who might be looking at it.
Back to the question.
I tried to find out for you but it looks like they may all just track during the night. See link:
I think I've seen other brands of smart watches that do it, but couldn't tell you off hand which they are.
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