Features: HD projection,Safty driving,simultaneous projection, no need to lower your head to know the dashboard data. Multiple display information and alarm status: speed,RPM, water temperature, voltage, single driving distance, low voltage alarm, high water temperature alarm, over speed alarm. Multi-color design makes the screen projection clearer , without fear of glareNano-technology to eliminate double reflections, clarity as day and night. Easy to Install, plug and pla ,only need connect the HUD with Car OBD port by OBD cable, HUD will display when car engine on / off. Automatic switch :turn on and turn off with the car,Protect the car battery, you also can use manual switch mode. Easy to use:Flick up and down, long pre to switch. Automatic brightne adjustment mode. Specificaitons Compatiable for:Cars in OBD II or CERTIFILE standard or check if there is a car diagnostic socket under the steering wheel. Speed display Unit: KPM,KMH (Exchangable) Display data: Speed, Clock, Oil consumption, RPM, Water temperature Connection: OBD IIPort (Connect with car OBD port) Notes OBD2model can work for OBD2 gasoline vehicles produced after 2004 in USA, and OBD2 gasoline vehicles produced after 2008 in othercountries. OBD2 model is not applicable for the following cars: Incompatibility:American models: Dodge, JEEP, IMSEOER, Chryslerand carsmanufactured before 2004 in USA Incompatibility:French and Italiancarsare not available: Fiat, Maserati, Lamborghini, DS, PEUGEOT, Citroen, Renault, Simcaetc. Incompatibility:SomeJapanesecars arenot available: Suzuki, Mazda 6, INFINITI(QX50 Q50Q501), Toyota AVANZAin 2013, Lexus (is250, ex250, ES300H), Honda (jazz, CRV) and cars manufactured before 2008. Incompatibility:Korean KIAand somecars ofHyundai(2013 Hyundai Sonata, 2017 KIASoul PS, etc.) Incompatibility:Hybrid and diesel vehicles, pickups, RVs, cars with modified automotive computers, Volvo, Switzerland, Chrysler Group, all brand models under Fiat Group. Incompatibility:German cars before 2004 For the abovecars can not useOBD2 models, please use GPSmodels. Package Included: 1 x HUD Main Unit 1 xOBD2 Conector 1 x Non-Slip Base 1xWindscreeen Film 1xOriginal Box 1xUser Manual About Y03 HUD: Functions: GPS and Beidou dual chips, the speedometer is very accurate, and the speed is refreshed quickly without any delay. Innovative design, with sunshine hood itself, good review even under sun. Plug & Play, after connect power supply, it will work directly, no need any other operation. Large font, clearly visible both during the day and at night. Speed unit is KMH (not support MPH). Wide application, it can work on all cars, trucks, buses, E-scooters, E-bikes. The Device is GPS Digital Speedometer, and speed is collected from satellites. So if tested at home or parking lot, perhaps speed can't display correctly. Please test it on the car outside with good signal. Note: it's speed display ONLY, no other function. Specification: Model: Y03 Screen Size: 2.8 Inch Material: ABS+PC Screen Type: LED Applicable models: Universal for most vehicles Color: Black and Green Package Included: 1 x HUD 1 x Micro USB Cable 1 x Anti-Slip Gel Pad 1 x Manual Do drop