Finger Pulse Oximeter Blood Oxygen Saturation Monitor Color SpO2 PR METER CMS50N
(SpO2 error is ±4%, pulse rate error is ±2 bpm or ±2%, whichever is greater. 2) SpO2 and Pulse Rate display,Pulse Rate waveform and bar graph display. 4) The display mode can be changed. 5) Screen brightness adjustable.