Description: Features: 2. 5.5'' large screen and high-definition display. 3. Multi-color design makes the screen more abundant and easier to read. 4. The use of nano-technology to eliminate unwanted reflections and can make display information more sharper. 5. New function: driving mileage measurement.7. Auto power on and off with vehicle started and shutdown, effective protection of the car battery, while retaining the manual switch mode, and more beneficial to control HUD. 8. Automatic and manual brightness adjustment mode, driving without glare. Button function 1. OBDII interface, to contact the vehicle OBD interface.2. Button for power on and off.3. Wave button: Up button(turning the button to upside), OK button(pressing the button vertically), Down button(turning the button to downside). Specifications: Product name: A8 HUDHUD color: BlackFunction: 13 Environment temperature - 40 ~+80 Barometric press:86-106KPa Relative humidity:10%-95% Environment voice:<=60dB Alarm of sound level:>=30dB(A) Size of product:12.5 x 7.5 x 1.5cm/5'' x 3'' x 0.6'' Package Weight: Approx. 280g Package Included: 1 x A8 Display1 x Reflective Film1 x OBD Cable1 x Anti-skid Pad1 x English User Manual Note: 1. Easy to install with user manual, but professional installation is highly recommended!OBD2 model can work for OBD2 gasoline vehicles produced after 2004 in USA, and OBD2 gasoline vehicles produced after 2008 in other countries.OBD2 model is not applicable for the following cars:Incompatibility: American models: Not fit for Dodge, Not fit for IMSEOER, Not fit for Chrysler and cars manufactured before 2004 in USAIncompatibility: French and Italian cars are not available: Not fit for Fiat, Not fit for Maserati, Not fit for DS, Not fit for PEUGEOT , Not fit for Citroen, Not fit for Simca etc.Incompatibility: Some Japanese cars are not available: Not fit for Suzuki, Not fit for Mazda 6, Not fit for INFINITI (QX50 Q50 Q501), Not fit for AVANZA in 2013, Not fit for (is250, ex250, ES300H), Not fit for jazz, CRV and cars manufactured before 2008.Incompatibility: Not fit for KIA Korean, Not fit for Hyundai some models (Not fit for Hyundai Sonata 2013, Not fit for KIA Soul PS 2017 , etc.)Incompatibility: Not fit for Hybrid and diesel vehicles, pickups, RVs, cars with modified automotive computers, Not fit for Switzerland, Not fit for Chrysler Group, Not fit for Fiat Group all brand models .Incompatibility: German cars before 2004.