[2 installation methods] A-pillar installation + center console installation. The latest GPS + OBD HUD that can be installed on the A-pillar display.[WORKS FOR ALL VEHICLES]- Unlike other Car HUDs, you do not need to worry about the compatibly, -1 could work for ALL vehicles, no matter which brand or which model all over the world cause is based on the GPS module inside.[RICH CONTENTS]- Almost everything you may need to read during driving will be shown by this HUD, including vehicle speed, driving direction, voltage, driving distance measurement, driving time, low voltage alarm, over speed alarm, satellite time and number, altitude. A great partner for your driving.[MULTIFUNCTIONS]- -1 HUD has been upgraded with new functions which make it different and more competitive than the traditional HUD in the market. Because -1 is based on the GPS module and satellite, so it can be used to speedup test, brake performance test and other car data information reading. A mutifunctional tool to help you know about your car.1. OBD mode information display: vehicle speed, water temperature, Oil temperature, voltage, fuel consumption, RPM, single mileage, total cumulative mileage, travel time, system time, intake pressure, air-fuel ratio, turbine pressure, intake pressure, acceleration test, brake test, read data stream.Alarm: Overspeed alarm, Speed alarm, High water temperature alarm, Low voltage alarm, Engine fault alarm, Clear fault code, Free switching between kilometer and miles, Celsius and Fahrenheit switch freely.2. GPS mode information display: speed, travel time, satellite time, altitude, number of satellites, driving direction, single mileage, voltage, acceleration test, brake test.Colour: Blackmaterial: ABSPackage Contents:1 * HUD1 * OBD cable1 * instruction manualOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.