1. Reliable accuracy and durability
2. Two Color OLED Display, four display modes.
3. 4-Direction Display adjustable.
4. Low voltage indicator, Real-time spot-checks.
5. Can measure SPO2,PR accurately.
6. SPO2 and PR display,PR waveform and bargraph display
7. Battery voltage low indication.
8. Low power consumption; Automatic power off when no signal
Low power consumption,20 hours continuous to work.
Low Perfusion less than 0.4%
9. Pulse sound function
10. Alarm function
11. Small and light weight, convenient to carry