Display information:Speed(Km/h or MPH, RPM, water temperature(C or F), voltage, single mileageAlarm:water temperature alarm, voltage alarm, gear shift reminder, overspeed alarm, fatigue driving reminder, engine failure alarmmanual or auto adjust the brightne Product Features: 1. WYOBD CAR 100% Brand Guarantee2. Display Data is more shine and clearly: 6 different Display modes3. Safty driving, Keep your eyes ahead, No need to down your head to see Dashboard while driving4. Easy to Install, Only need connect the HUD with Car OBD port by OBD cable, HUD will display when car engine on / off5. Over-time driving Alarm, Low Voltage Alarm, Over-speed Alarm, High temperature Alarm, Engine faulty Alarm6. KMH & MPH Switch Freely.7. Compatiable for: Cars in OBD II Standard (after 2007 years)8. Installation position: On Center Console9. Connection: Connect with Car OBD port10. Display information: Speed, engine RPM,water temperature, driving distance,battery voltage, Turbine Preure / intake preure, Faulty Code Read... Functions Display information: Speed(Km/h or MPH, RPM, water temperature(C or F), voltage, single mileage Alarm: water temperature alarm, voltage alarm, gear shift reminder, overspeed alarm, fatigue driving reminder, engine failure alarm manual or auto adjust the brightne Attention Applicable to OBD2 gasoline vehicles produced in Europe and America after 2004 and OBD2 gasoline vehicles produced in other regions after 2008.