Features for Pulse Oximeter: <br />- Two color OLED display、 four display modes <br />- 4-direction display <br />- Real-time spot-checks <br />- Pulse waveform & bargraph display <br />- Advanced setting for alarm <br />- Functions of audio alarm and pulse sound <br />- Automatic power off <br />- Low power consumption <br />- 50 hours continuous to work <br />- Low perfusion ??0.4% <br />- Low voltage indicator <br />- Widely used in hospital、 home healthcare、 oxygen bar、 community medical centre、 alpine area、 sports healthcare etc.  <br /><br />Package Content: <br />- 1 x RPO-8B Fingertip Oximeter<br />- 1 x Lanyard<br />- 1 x English user's manual