1、OBD+GPS dual system, can display at the same time. 9 kinds of display screens can be switched, up to 10 Hz refresh rate, there will be no freeze delay. 2、With alarm ambient light, the ambient light is normally blue, and flashes red in case of an alarm. The screen in the lower right corner also has a clock function. 3、The car head up display comes with a rotatable bracket, two installation methods, center console installation, or double‑sided adhesive on the windshield. 4、There are three units of turbine pressure: PSI, kPa, and bar. The turbine value can be adjusted and calibrated to increase the fuel consumption unit KM/L. 5、When the speed is switched to MPH, the water temperature will automatically switch to ℉. The single driving distance will also automatically switch to Miles, and the fuel consumption will automatically switch to MPG. Item Type: Head Up Display Material: ABS Size: Approx. 75mm/3.0in Fitment: Universal (OBD cable needs to meet the OBD2 standard vehicle) GPS Mode: Speed, altitude, number of satellites, clock, single driving distance, single driving time and compass. How to Use: 1. Simply connect the HUD to the car OBD via the OBD cable, and the HUD will be displayed when the car engine starts. 2. Displayed by plugging in the USB cable and powering on. 1 x Head Up Display 1 x OBD Cable 2 x Double-Sided Tape 1 x Wrench 1 x Pry Bar 1 x Manual