Pulse oximetry is a test used to measure the oxygen level (oxygen saturation) of the blood. It is an easy, painless measure of how well oxygen is being sent to parts of your body furthest from your heart, such as the arms and legs.
The Fingertip Pulse Oximeter Model MD300C2F is designed for spot-checking blood oxygen saturation levels and pulse rate. Using it, athletes, pilots and people who would like to know their SpO2 and pulse rate can get accurate readings quickly. That data is the important indicator for whether your body is in the health state.