P1 Smart Ring

I purchased this HERZ P1 Smart Ring and received it pretty quick. I've worn it everyday for the last couple of weeks, but (1) I purchased a size 8 to wear on my index finger, but it was too small, so it's been on the middle finger, and (2) I wore it all day today; looked at the app and it said I onl

I have the herz p1 it was $60 now I cannot compare it to any other ring but it seems to do everything it says , activity steps, sleep , heart rate , blood oxygen, stress … and it all seems to be very accurate ! The battery lasts for a week ! I don’t get it wet although it says it’s water proof with