The same or similar product has been purchased by our relatives from a physical pharmacy store at a cost of around 25 euros. The screen flips depending on whether you have your finger up or down to read it more easily, simply by pressing the button. It even comes with a cord to wear around your neck like a necklace so it doesn't get lost, if someone is interested in more intensive use and frequent monitoring.

It's pretty good. It has similar measurements to a more expensive one but lower, so it may scare someone for no reason.

There is a significant deviation compared to a hospital oximeter.... At least 2-3% lower...
For the pulse, it is fine...

I haven't compared its measurements with any other to have a clear picture, that's why I deduct one star.

It is unreliable, it shows incorrect measurements. I got it for my mother and I panicked with the measurements it was telling me over the phone. I borrowed another, more expensive one from a friend and compared them. The borrowed one showed 91, which was low of course, but this new one was showing 86. We're talking about such differences

We got it for our parents. Compared to ours, which is a brand name and cost around €60, it's okay. The measurements are just slightly off, it just takes a little longer (not something tragic) to give the reading. The build quality is average, it won't fall apart in your hand but it's not super either.