Description: HUD short for Head Up Display. It displays driving datas on the front windshield such as speed, rpm, fuel consumption, water temperature, voltage; avoiding drivers become dangerous because of watching the instrument while driving. Drivers can read the driving information instantly, and can always keep the best state on the way with HUD. Features: 1. Available for cars with OBD2 and EUOBD port(Car automatic diagnosis system), plug and play. 2. Rich contents: Speed, engine RPM,water temperature,voltage, fuel consumption, engine fault code. 3. Display mode: default mode, high-speed mode, automatic mode. 4. Kilometer and Mile can be switched freely. 5. Screen 5.5 inch HD display, easy for read. 6. Auto power on/off: HUD start and off with vehicle started and shutdown, effective protection of the car battery;retaining the manual switch mode,more easy to control HUD. 7. Over speed alarm include single-speed alarm and four-stage alarm. 8. Engine RPM alarm can help to fuel-efficient by shifting, and is good for novice. 9. Automatic and manual brightness adjustment mode,driving without glare. Main display information: 1.Brightness sensor 2.Water temperature icon 3.Water temperature scale 4.Engine RPM scale 5.Over speed alarm 6.Gear display 7.Multi-function value 8.Icon for engine RPM,inlet pressure,water temperature,clock,voltage,ignition angle,acceleration time for 100 Kilometers 9.Throttle position and fuel consumption 10.Multi-function value 11.Buzzer mark,engine fault,fatigue alarm,voltage alarm,data transfer 12.Speed unit HUD installation: 1. Know your vehicle brand,HUD work for cars with OBDII agreement or EU OBD agreement. Open the engine hood and find the sticker below it (see the below picture 1), if it has words like OBDII CERTIFIED, then it can be installed. 2. Find out the 16 pin diagnostic link (see the below picture 2) of the vehicle and connect it well with OBDII connecting line. Specification: Environment temperature: -40c- + 80c atmospheric pressure 86-106KPa Relative Humidity: 10% -95% environmental noise <= 60dB (A) Alarm sound level: "= 30dB (A) Working voltage: 9V ~ 16Vdc (12Vdc / 400mA) HUD size: 150*85*14(mm) HUD Weight: 280g Package included: 1 x HUD 1 x OBD Cable 1 x Reflecting Film 1 x Anti-slip Pad 1 x English User Manual Note: 1. Please allow 1-3mm error due to manual measurement. Thanks for your understanding.