Car Display HUD Head up speedometer Speeding Warning for Buses Trucks Green MP H Description: [Plug and Play]: hud car display works directly when power is connected without any other operation. And the HUD turns on/off when the engine starts/stops. [Accurate Speed]: No stroke speed, the display is very consistent and smooth. Ensure timely and accurate speed and display of your car. [User-Friendly Display Screen]: Car Head HUD display with screen in front of sunlight, and large font clearly shows key data day and night. [Speed Unit]: /h and mph versions available; This device is a digital device and speed is taken from it. Therefore, if the test is carried out at home or in the parking lot, the speed may not be displayed correctly. Please test outside the car with a good one. [Widely Used]: Head Up Hud Display Powered by 5V USB power adapter, can work on all cars/trucks/buses/electric vehicles and more. Size Chart: 92*52*20mm/3.62*2.05*0.79in The package includes: 1 pc. HUD Head Up Car Display 1 pc. USB cable 1 pc. Matt 1 pc. Cover