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USA OLED Fingertip Pulse Oximeter Finger Blood Oxygen SpO2 PR Heart Rate Monitor

$9.99

(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. 5) Screen brightness adjustable. Safety classification: type BF applied part.