V409 Features

1. Simple and comfortable to use.
2. Clear, wide-angle OLED display.
3. Real-time display of SpO2 and PR.
4. Rotational display.
5. Extremely lightweight.
6. Easy-to-change AAA batteries.
7. Auto power-off after 8 seconds.
8. Graphical pulse rate display.
9. 100 hours battery life.
10. Low-battery indicator.