Oximeter is a medical device that uses non-invasive infrared technology to measure blood oxygen saturation in the fingers, toes, ears and other locations, and its results will be tested in the form of a digital representation of the results, the main advantages of the finger clip oximeter, compact and portable, high accuracy, easy to operate, for the middle-aged and elderly people, no difficulty, belonging to the second category of hospital equipment, with a registration certificate of the brand. High credibility.