About M3 HUD:Features:100 percent brand new and high qualityMultifunction: speed,water temperature,voltage monitoring and fatigue driving warning.Smart size, big digital display, Easy to install, put any where.ONLYavailable for cars with OBD2 and EOBD agreement(European:manufactured after 2003, Other region: after 2007)Dont support JOBD and OBDI,if your car is these agreement(manufactured before 2008),please replace with other cars that comply with OBD2 interface. Specificaitons Product Name: M3 HUD DisplaySpeed Display Unit: MPH,KMH (Exchangable)Display Data: Speed, Water Temperature, Voltage.Alarm for : Overtospeed,Engine erro,Water temperature,Fatigue dreving.Connection: OBD PortLightn Sensor: Yes Package Included: 1 x HUD Headup1 x OBD Cable1 x English Manual1 x Reflective Film1 x Sticker 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 and 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, Etoscooters, Etobikes.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: Y03Screen Size: 2.8 InchMaterial: ABSandPCScreen Type: LEDApplicable models: Universal for most vehiclesColor: Black and Green Package Included: 1 x HUD1 x Micro USB Cable1 x AntitoSlip Gel Pad1 x ManualAbout Car ClockFeatures: 100 percent Brand new and high qualityWith calendar functionCar electronic digital clockDisplay date and time (adjustable)Can stick to your dashboard by the doubletosided tape suppliedSize: As the PicturesFunction: Time, Date, TemperatureMaterial: ABSPowered by: 1 x CR2032 Button Battery(included)Package Included:1 x Digital Clock1 x Doubletosided TapDo drop