1. GPS mode Display information: driving speed, battery voltage, number of satellites, single driving distance, mile switch, automatic/manual brightness adjustment Alarm: overspeed alarm, low voltage alarm 2. OBD mode Display information: driving speed per driving mileage, water tank temperature, battery voltage, mile switch, temperature unit switch, automatic/manual brightness adjustment Alarm: overspeed alarm, speed alarm, water temperature alarm, low voltage alarm, fatigue driving reminder (1-8 hours can be set) 3. Light sensor: HUD can automatically adjust the brightness according to the environment 4. RPM icon: Engine speed in OBD mode, and speed progress bar in GPS mode. 5. Multiple functions: Speed,water temperature,voltage,satellite numbers,driving distance
