Model Number: S-SPO2-0013 Brand Name: Tosense Key Specifications/Special Features: 1. Easy to use, portable, can use anywhere and anytime (LCD display)2. Low power consumption3. Integrated with SpO2 probe and processing display module4. SpO2, PR (pulse rate) PI (perfusion index) value display5. Pulse rate value display, bar graph display6. Pulse waveform display7. Display mode can be changed8. With measured data overruns limits and low-voltage alarm function, limit value is adjusted automatically9. Low-voltage icon appears before working abnormally which is due to low-voltage and with alarm function10. When the device is under the state of measuring, will automatically power off if the finger falls out of probe