Sourcingbay Multi-function Car HUD Vehicle-mounted Head up Display System OBD Projection Display Car Speed with Voice Prompt Function / Gear Shift Reminding / Over Speed Alarm / Water Temperature Alarm / Voltage Alarm / Vehicle Failure Warning / Drowsy Driving Warning+ Sourcingbay Stand gift 5.5 inch screen, high definition display during the day,with voice prompt function Digital display Drive travel details (the data),travel time,The mileage, average fuel consumption Detection of fault codes,Eliminate the fault codes,display hundred kilometers average fuel consumption Based on vehicle working status , HUD have three working modes Idle modeCruise modeInformation of this driving Reminding and alarming:Over speed alarm,Water temperature alarm,Vehicle failure warning,Voltage alarm,Drowsy driving warning