Features: 1.Plug and play: Auto-matches automobile models of OBD II or EOBD(European On-Board Diagnostics). 2.For safer driving: Omits your lowering head to the dashboard, just concentrate on the road ahead and you will notice your driving data. 3.Over-speeding alarm: Alerts you if you exceed the speed limit by setting over-speed buzzing alarm. 4.Multi-color and high definition display: More abundant frames and easy to read. 5.Adopted nano-technology: Eliminates unwanted reflection to present more definition frames. 6.Display rich contents: Speed, engine rpm, water temperature, voltage, mileage, shift reminding, driver fatigue reminding, low voltage alarm, high water temperature alarm, over-speeding alarm, engine fault alarm, fault code elimination, km/mile free shifting. 7.Brief projection: The frames are so brief that you can easily grasp very important data, naming speed, some alarms and engine rpm, 8.Auto switch: Automatically turn on and off in accordance with the car engine, which will effectively protect the car battery. Except, remaining manual switch for your better control of this HUD. 9.Auto and manual brightness adjustment: Automatically adjusts its brightness to provide clearly visible projections both in direct sunlight or at night. 10.Detect accurate driving information from ECU of your vehicle via OBDII system. Specification: Type: Head up display X5Material: ABSColor: BlackDisplay type: DigitalCar model: With On-Board Diagnostic OBDII interfaceProduct Size: (3.55x1.97x0.47)" / (9x5x1.2)cm (L x W x H) Projection Size: 3.0 inchEnvironment: ~40c 80c atmospheric pressure 86-106kpauyAlarm sound level :