HD display, clear rendering of true colors, optical imaging without ghosting 18 flicker-free automatic light sense, see clearly during the day, soft and dazzling at night One-click switch, free collocation with multiple interfaces OBD2+GPS dual system, suitable for all car models Multi-alarm settings: over speed alarm, RPM alarm, engine fault code alarm, high water temperature alarm, shift reminder, fatigue driving reminder etc. Including all HUD functions: Vehicle speed, RPM, water temperature, battery voltage, fuel consumption, altitude, mileage, compass, navigation distance point, driving time, power test, satellites number, clock, etc. Multi-functional display: Real-time display of clock, driving time, mileage etc., no need to look down at mobile phones and watches, improve driving safety Adopt imported AI chips for smart reminders, speed color will change as different speed Non-destructive installation, plug and play Automatic switch, energy saving