3 ms·
AFAIK most pulse oximeters themselves are plenty inaccurate (these "stick-on-your-finger" kinds), as they all work by the same mechanism.
by gf000 1y ago
AFAIK most pulse oximeters themselves are plenty inaccurate (these "stick-on-your-finger" kinds), as they all work by the same mechanism.
- temporallobe 1y agoMy Apple watch always rates my O2 2-3% lower than my finger unit, likely due to my hairy wrist.
- gf000 1y agoWell, then you can be reasonably sure that the actual value is somewhere in-between, possibly closer to the finger unit though.
- NavinF 1y agoThe ones that send light through your finger and measure it on the other side are much more accurate than the ones that bounce light off your wrist like the Apple Watch. That said, they both work. This is easy to verify by holding your breath.