Easily master Fully Automatic Blood Pressure Measure Sphygmomanometers With Spo2 measure function.PINMED strive for excellence,Just to get your attention. Blood oxygen saturation (SaO2) is the percentage of the volume of oxygen-bound oxygenated hemoglobin (HbO2) in the blood as a percentage of the total binding hemoglobin (Hb). It is the concentration of blood oxygen and is an important physiological parameter of respiratory circulation.