MOQ 30pcs Oximeter Blood Oxygen Saturation MonitorDisplay parameters, blood oxygen SPO2 value, pulse PR value, blood oxygen bar chart, pulse waveform chart, PI (perfusion index), respiratory rate monitoring parameters. Display screen, the product uses blue and yellow two color OLED display. Display mode, four directions. Energy saving and environmental protection, low power consumption, the two AAA batteries can be used for more than 40 hours. Voltage warning, a low voltage warning is displayed when

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