Features:<br />Set blood oxygen probe and processing display module in one body<br />The product has the advantages of small volume， light weight and convenient carrying.<br />The product is simple and convenient to use， low power consumption<br />Numerical value of blood oxygen saturation<br />Pulse rate value， bar chart display<br />Pulse waveform display<br />Battery indicator<br />You can change the display mode of the 4 direction change<br />Automatic shutdown function: in the measurement of interface condition， the measured finger off within 5S after the automatic shutdown