X30 Car HUD OBD Head Up Display Car Speedometer Smart Digital Auto Universal Display Meter,Default NO5148

Features:

1.At 65 mph, looking down for one second to check the speedometer means driving blind for 95 feet.

2.Now, drive safely by never looking down to check speed again.

3.This head-up display holder shows enough information directly to you.

4.Allowing you to maintain constant focus on the traffic, with no extra distraction.

5.Uses OBDII Interface to determine the true speed of the vehicle.

Use of multi-purpose button

Take a short press of the middle button: enter the function setting mode

Forward and backward buttons: change the content of the main display window

Restore factory settings: first pull out the data cable, and then press and hold the middle button, reinsert the data cable to restore factory settings.

There are several reasons why there may be a difference between the speed displayed on the car\'s speedometer and the HUD. These include:

1.calibration set by vehicle manufacturers to read high to ensure their speedometers never indicate a lower speed than the actual speed of the vehicle.

2.speedometer inaccuracy due to aftermarket modifications such as different tire and wheel sizes or different differential gearing.

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