SPO2 and PR display PR waveform and bargraph display 4 directions and 8 modes Auto shut off Pulse sound and alarm function Pulse OximeterFeatures: I. Available in hospital, home, community medical treatment, sports healthcare etc.II.Measure SPO2 and PR accuratelyIII.SP02 and PR display, PR waveform and bargraph displayIV.Battery voltage low indicationV.4 directions and 8 modesVI.Low power ...