EchoMan EM05 5.5" High Brightness Car Head Up Digital Display, Car HUD with Remote Control Echo man car head up display, car HUD, plug and play, mph. Speedometer, over speed warning- high brightness easy to read led display Easy installation - Plug-and-play. Automatically communicates with car equipped with OBD II (On Board Diagnostic System II) interface Displays engine rotation (RPM), speed (MPH),battery voltage (V), temperature (F), fuel consumption (mpg & L/100km) and other information on the windshield at driver's eye level Over speed alarm warning for safe driving. Precise, HD and high-brightness LED display, easy to read Gear shift (Auto equipped with Manual transmission) alarm warning, helpful to new drivers