7 5.5 Inch HD HUD Car Alarm System Detector Display Speed/ Engine/ Temperature/ Fuel/ Failure 1. Adapt to any car, easy to install, plug & play; 2.5.5 inch HD display; 3. Color color design, so that the screen is more abundant, easier to read; 4. The use of nano technology to eliminate unwanted reflections sharper pictures; 5. The display rich content: speed, direction of travel, travel time, travel km, time display, the number of satellite, altitude, speed alarm, switch freely kilometers miles; 6. Switcher, vehicle start, lorry shutdown, effectively protect the car battery; while retaining the manual switch mode, more conducive to control HUD; 7. Automatic & manual brightness adjustment mode, driving without glare. HUD preparation before installation & use HUD hosts will be placed in the proper position windshield dashboard, the random configuration USB (Universal Serial Bus) car charger into the cigarette lighter inside, start the car in an instant energized, the host display window will light LED lights, the host back to standby, while satellite signal icon lights start flashing. Host automatically search the satellite signal status, search for a satellite signal after a few seconds, the clock will be displayed in the host window. After receiving satellite positioning is successful, the satellite icon stops blinking, HUD can be used normally Specification: Operating Voltage DC 8 ~ 18 ~ 24V Working Current 40m A Sleep Current 15m A Electronic Compass Accuracy 1 degree Speed