Hello,
Unfortunately, the oximeter only worked for two days with new batteries.
It's not worth the money to send it back to get a new one, even if it's more expensive.
For your information, it displays the message "Finger out" and the screen turns off.
Thank you.
M. Priniotakis.

For its price, it is perfect. I ordered 4 more for relatives and friends.

The overall experience is very positive. Excellent construction and functionality! Accurate measurements and bright.

Very good guys, it is exactly as they describe it in the product details. I really think it has accuracy and features that you can find in oximeters above 20-25€. Nice construction, it looks durable and fits correctly and tightly. I highly recommend it.

I bought two for my in-laws and they both work equally perfectly for a few months now. Clear screen, they use it with great ease! Accurate precision checked

Terrible, the worst thing ever. It does not work outdoors, probably due to the radiation of the sun. As soon as I took it outside the store to show it to a customer, it stopped working and showed "finger out" with no indication. I bought 5 of them and all 5 were useless. I returned them to see if the store would accept them or call me stupid. They should definitely remove them from sale. It's perfect, but perfectly terrible! Far away

Very mediocre. Very loose, basically held together by the tape and it is exposed so it will definitely get damaged at some point. It is so loose to the point where you have to hold it.

On 12/10/2021, the screen came off because of the tape, obviously because I put in new batteries. Of course, for the price it has and because its measurements are reliable, I would buy it again.

Reliable measurements checked. Good build quality and very easy to use. Many indications, fast and truly economical for its characteristics.