X5 Car Head Up Display - Monitor your car's real time conditions!Features: Useful Device: Screen 3 inch HD display and head-up display.Speed warning can be very helpful for anyone on there dash. Easy to Install: Variety of sensors,fits most car types,easy to install, plug and play. HUD power on and off automatically, effective car battery protection. Advanced Technology: Bright and auto adjust; Extremely tenable; Driving without glare. Nano-technology eliminates double reflections,clearer and easier to read.Specifications: Material: ABS Color: Black Display type: Digital Car model: With On-Board Diagnostic OBDII interface Product Size: (3.55x1.97x0.47)" / (9x5x1.2)cm (L x W x H) Projection Size: 3.0 inches / 7.62 cm Environment: ~40c+80c atmospheric pressure 86-106kpauy Alarm sound level: >>=30db Working voltage: DC9-16V Working current: 40mA Sleeping current: 15mA Compass precision: 1 Speed range: 0-400 KMNotes: 1)If you find out that HUD displays only voltage for 30 seconds and then turn off automatically, this is because the interface isnt OBD II or EOBD. So we suggest checking twice whether your interface is OBD2/EOBD or not before purchase. 2)For old cars, you should set your start voltage at 12.8V, for your battery is too old to provide 13.2V voltage. 3)If there is double image,that is because your double-pane windshield, please take the advantage of your reflection film. 4)This X5 HUD only compatible with universal OBD II and EOBD interface, but incompatible with OBD I or JOBD. 5)Some cars, like Hummer and Savana, have special interface, may not compatible with this product, and we suggest A1 or Q7.Package Included: 1pc OBD II Head up display 1pc OBDII Cable (Approx 1.45m ) 1pc Non-slip Mat 1pc Reflection Film 1pc User Manual