◆ Display of SpO2 ,pulse rate ,pulse waveform and nose flow waveform. SpO2 error is ± 4%, pulse rate error is ±2 bpm or ±2% (select larger). Two kinds of SpO2 probes. ◆ Power consumption:≤70mA. ◆ Battery working hour:It can last more than 20 hours when the power is full.
