Hi,
I just took four readings and got 89% the first time, no reading twice, and 97% the last time. What's the point of having a sensor that is so unreliable it can't be used. I have a Venu, Venu 2, and Venu 2 Plus. None of them provide consistent, accurate PulseOx values.
For reference, a fingertip reader usually shows me 97% - 99%. The Venu watches are always several points below the fingertip readers. I have no tattoos on my wrists and I wear the watch snugly fir, just above my wrist bone.
End of rant