It supports multiple display modes, one-key switching of the main interface.55 x 42mm larger screen for easy reading.Multifunctional detection and diagnosis, makes you has better understanding of your car.Item Name: Car Digital Hud DisplayMaterial: ABS, PCWorking Voltage: 9V - 16Vdc (400mA)Alarm Sound Level: 30dB(A)Relative Humidity: 10% - 95%Major Functions: Current Vehicle Speed, Engine Speed, Water Tank Temperature, Battery Voltage, Various Fuel Consumption, Driving Time, Driving Distance, Oil Temperature, Air-Fuel Ratio, Intake Pressure, Turbo Pressure, Data Flow Throughout The Vehicle.Features: Universal, Multifunctional, Large ScreenSize: 73mm x 68mm x 46mm/2.87" x 2.68" x 1.81" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Host1 x OBD Cable1 x Anti-slip Mat1 x User Manual