I have this pulsoxi bought so that I have the oxygen content of our little child always in mind as we in sick house are always due sauerstoffmagel and I finally wanted to have it at home in view, it is super simple and works well on small figerchen (2 years old child) very well, I leave it to the run in paralel kranlehaus and it's one hundred percent match even the nurses and doctors were thrilled I can really recommend for