A9 5.5 inch Universal Car OBD2 HUD Vehicle-mounted Head Up Display

1. 5.5-inch color screen. Reflective readings. Non-destructive installation. Plug and play.
2. Display function: driving speed, engine speed, instantaneous fuel consumption, average fuel consumption, clock, the number of kilometers traveled, the current driving time, and the acceleration time of 100 kilometers. It can detect and clear the car error diagnosis code without professional equipment elimination.
3. Overspeed alarm, water temperature alarm, fatigue driving reminder, voltage alarm (can be set freely), early warning car breakdown.
4. Start with the car, sleep with the car, effectively protect the car battery, while retaining the manual switch machine is more beneficial to control the HUD.
5. Automatic brightness adjustment Keep the manual adjustment function.