Display Function: 

1. RPM: the bright icon means the engine speed value 

2. Multi functions area: RPM/Single driving distance/Voltage/Water temperature/Fuel consumption/Single driving time

3. Unit for Multi function area

4. Power button

5. Setting button

6. USB port

7. Buzzer

8. Setting button

9. Speed Unit of KM/H or MPH

10. Vehicle speed

11. Over speed alarm

12. Engine fault icon

13. Fatigue driving icon