Display functions: 1.Decorative icon 2.Multifunctional display area 3.Compass: W (West) 4.Satellite icon 5.Compass angle 6. Compass: N (North)7. Speed unit: KM/H (kilometers) MPH (miles) 8. Compass: E (East) 9. Driving mileage 10. Fatigue driving alarm 11.Compass: S (South) HEAD UP DISPLAY-GPS GPS speedometer Head-up Display For All CarsThe speed is always displayed in front of you to avoid speeding fines.Speed, compass, fatigue driving reminder 5V USB Cable For CarConnect the cigarette lighter Fits all carsFatigue driving reminderWhen driving fatigued, look down at the vehicle information. For example, at a speed of 60km/h,bowing your head for 1 second is equivalent to driving blindly for 16 meters.There are certain security risks!The HUD meter can be installed directly in front of the driver without having to look down for information.Effectively improve driving safety! Multiple mode switching 1.Vehicle speed2.Number ofSatellites + Compass3.Vehicle speed + Unit + Compass4.Mileage + Compass5.Compass angle +Compass Simple function and compact appearance Speed/Driving mileage /Compass angle /Automatic lightsensitivity/Satellite icon/Mile andkilometer switch/Sound alarmswitch/Over speed alarm/Fatigue drivingalarm /Automatic poweron and off Driven DistanceGPS COMPASS It can take you out of the desert Place firmlyon the car it"'"s strong1.Short press in: confirm the option after entering the setting menu2.longpress in: enter the setting, after adjusting, press vertically for 2 seconds to save and exit3.Push left: Switch display mode, move options after entering setting4.Long push left: push leftfor 2 seconds to turn off the buzzer alarm,do it again to turn on 5.Push right: switch between concise mode and standard mode, move option after entering setting