WIIYII A900 OBD2 HUD Auto Acceories Head Up Display Speed RPM car electronic acceorie Gadgets Inteligentes Projector in car HUD Main Functions & Features: 1.Plug and Play connectivity with any OBDII or EUOBD capable vehicle; 2. Screen 3.5-inch HD display 3.Multi-color design makes the screen clearer and easier to read 4.Nano-technology to eliminate double reflections, more clarity 5.Rich Contents: speed, RPM, water temperature, voltage, single driving distance, low voltage alarm, high water temperature alarm, over speed alarm, freely switch between kilometers & miles. 6. Auto power on/off: HUD power up and power down with vehicle, effective protection of the car battery with manual switch mode 7. 5-level brightne adjustment, automatic and manual brightne adjustment mode 1.Engine RPM 2.Alarm(On/Off Option) 3.Speed unit at MPH 4.Light sensor (Automatically adjust the brightne according to the environment) 5.Speed unit at KM/H 6.Voltage icon 7.RPM unit 8.Water temperature icon 9.Multi-function area: speed, water temperature, voltage A. OBDII cable input B. Power button C. Setting button: Three ways of setting button: a. Up button = up motion b. Ok button = inward button prees c. Down button = down motion HUD DisplayPacking 1x A900Head Up Display 1 x Non-slip mat1 x Reflective film1 x OBD Cable1 x English User Manual Improve driving safety factorDon't look down at the dashboard data, easily grasp the car condition, focus on the front of the field of vision, improve driving safety Don't worry about a night out Multi functions interface,choose the one you like1.Vehicle speedmeans the current driving speed, when driving speed exceeds 50KM/H,the icon will flash and give alarm2.RPMmeans present engine speed, when RPM exceeds 5000R, the RPM icon will flash and give alarm3. water temperaturemeans the current water temperature, when water temperature is higher than 120, the icon will flash and give alarm4.voltagemeans current battery voltage, when voltage below 11V, the icon will flash and give alarm5.standard modespeedwater temperature RPM 4 kinds practical driving data, easy to switch Pre wave key to power on/off key direction, can switch the display information 1.Simple mode (only display speed) For:experienced driver 2.Speed + RPM mode For:novice driver 3.Speed /water temperature mode For:too old cars 4.Speed /RPM water temperature mode For:female driver/novice driver 4 Alarms:1.Overspeed alarm 2.RPM alarm 3.high water temperature alarm 4.low voltage alarmHUD is for driving safety Payment We support the following payment methods which protected by Buyer Protection System