4 Inch Car HUD Head Up Display Vehicle-mounted Security System with OBD2 Interface

The head up display (HUD) can project important information (e.g. vehicle speed) onto the front windshield at the eye level of the driver and thus help to make their driving safe and sound when driving at a high speed, especially at night without lowering their heads.

Features
1. Automatically adapt to the automobile models with OBD II (Bus Automatic Diagnostic System).
2. Accurate screen digital speed, graphics speed also show.
3. Vehicle speed, engine speed, water temperature, fuel consumption can be read easily.
4. Time display function.
5. Fatigue driving alarm, over-speed alarm, high temperature alarm, battery voltage is too low alarm, the remaining oil remind.
6. Alarm mode can be chosen as you wish.
7. Time recording of driving and reminding.