Love this, EXCEPT the batteries die after two uses. Tried different batteries. Same result. I don’t see other complaints about this so, for the price, I think I’ll order another. Maybe I have a dud.

The enclosed printed information was very detailed in every way except explaining what the readings on display indicate. How is a user to know what goal numbers user should hope to have?

Sometimes our oxygen is 84, immediately afterwards is 99, I go with the good numbers and hope for the best

For $30 I was surprised how cheap the item looked when it was received. It has the quality level look of say a pedometer you get as a give away at work or something. We'll see how it works/holds up.

II check it against my doctor’s readings twice. It missed the mark. Both times. So, I do not know whose was the correct reading. I suspect the Dr’s office has more reliable equipment but I cannot be certain.

The display is clear and bright, and the unit is easy to use. However, I am rating it three stars because the display window is so soft it is easy to scratch with a fingernail, the case is made of ABS, a very cheap plastic in the styrene family, and the unit will not accept rechargeable batteries.

The batteries aren't set up right. They springs are used for negative and positive. It works if I leave the battery lid protector off. As soon as I put it on it won't work.

Couldn't get to work for the longest. Tried different batteries finally figured out in ONLY turned on when the back battery cover was OFF. Funny usually things need a cover ON to hold batteries in place to work but this is the opposite. Something with the way it's made. Tried different types of batteries but it's definitely the device. Otherwise works fine lol

It is an okay product for the price.

Works intermittently