1. Non-invasive quick test: painless measurement, not limited by time and place
2. OLED screen: high brightness, large font size, and can be seen clearly at night
3. Multi-directional display: 4 directions, 6 display modes
4. Multifunction: simultaneous measurement of SpO2, pulse rate and perfusion index
5. Energy saving: Without use, auto-power off in 15 seconds
6. Shell color can be customized: green, pink, black