The pulse oxygen saturation is the percentage of HB02 in the total HB in the blood, the so-called 02 concentration in the blood. It is an important bio-parameter for respiration. The pulse oximeter is a portable, convenient, non-invasive device, used to monitor arterial hemoglobin oxygen saturation (SP02). This unit is designed for adult patients (weight 60 lbs and over) and pediatric patients (weight 44-60 lbs) for sports, recreation or aviation.