The purpose of this device is to be able to obtain your pulse rate and your o2 level. This oximeter does just that but sometimes it can be a little off which is why I cannot give it 5 stars. I do like that it can be read at any angle like if you're holding it up you can read it that way but if you're holding it down you can also read it that way as well. This makes it easy to testerone levels. I notice that this does not work on my 5 year olds fingers I'm assuming because that is because they are too small. In the package you get the pulse oximeter, a storage bag, and two different lanyards which connect to the o2 sensor. This is a pretty decent product to have if you need it in a pinch and you definitely will be able to tell if the levels are so low that you need to go to the doctors. I did receive this product at a discounted rate in exchange for my honest review. All opinions are my own and based on my personal experiences with the product.
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