Features: *1. Multifunction - Intelligent GPS multi-function HUD speedometer supports high-precision monitoring of vehicle speed, vehicle pitch angle, vehicle roll angle, compa, time, and vehicle battery voltage status, ensuring your driving safety. *2. 3-in-1 Alarm System - Accurately displays the pitch and roll angle changes of the vehicle and sends a clear notification. When one or both angles exceed 40 degrees, negative or positive, the alarm will sound. Also cover the Overspeed and Fatigue Driving reminders. *3. High-definition LCD Display - Adopt high-resolution color LCD display with a built-in light sensor that adjusts the brightne of the screen day and night. Free rotation, more sensitive. After turning on the power, there will be backlight inside, which will help you see the screen at night or in dark conditions. *4. GPS Module - Equipped with a high-precision satellite GPS signal module. Automatically monitor vehicle driving conditions. Widely applicable to Asian cars, American cars, and European cars. *5. It can be connected to the vehicle OBD interface through a data line to read the real-time data output of the ECU, and supports the NINE OBD protocol. Size: 170x70x60mm Function: *1. GPS satellite speedometer *2. Altitude display *3. Longitude and latitude display *4. Compa *5. Satellite time display *6. Overspeed alarm(>120km/h) *7. Fatigue driving alarm (driving continuously for 4 hours) *8. Vehicle roll angle *9. Vehicle pitch angle *10. Automatical screen brightne adjustment *11. Color HD LCD display Package Includes: 1 x HUD 1 x Cigarette Lighter Power Cord 1 x ACC Power Cord 1 x Instruction 1 x Anti-slip Pad