Functions:Display data: car speed, time, RPM, voltage, water temperature, travel time, travel distance, satellite number, altitude, travel direction, latitude and longitude, oil temperature, acceleration test, brake test, turbo pressure, engine load and other car data.6 alarm functions, including speed, water temperature, low voltage, high voltage, fatigue driving, vehicle DTC and other alarms. With this head-up display, you can clear the fault codes yourself without having to go to a repair store and pay for the repair.5 display pages, 5 interfaces, free switching, LCD gauges, clear display of various data.2 types of installation: with adjustable bracket, mounted on the dashboard or attached to the windshield.It allows you to understand your car more clearly without looking down at the dashboard and adds a sense of technology to your car. Specifications:Material: ABS+PCScreen Size: 3 InchScreen Type: LEDInput Signal: OBDApplicable models: UniversalColor: BlackNote:If your car is pre-2004 (for US automakers) and pre-2008 (for European/Asian automakers), OBD is not compatible. OBD is not compatible with some special vehicles, such as electric vehicles, diesel vehicles, hybrid vehicles, pickup trucks, passenger cars, etc.The F15 includes both OBD and GPS chipsets, OBD may not be compatible with your car, but it"'"s still a cool HUD because its GPS works on all vehicles.Package Included:1 x F15 HUD1 x OBD Cable1 x Rotary Holder1 x English ManualAbout G4S HUDFunctions:Intelligent GPS vehicle speed and time display: GPS vehicle speed, satellite time, compass, overspeed alarm, driver fatigue reminder.Equipped with high-definition LED screen for clearer information display, ultra-mini design and full of technology.Features a GPS navigation direction compass to help drivers by indicating directions.With a light sensor that adjusts its brightness according to different light, it is very clear in bright light, providing a safer day and night driving experience.GPS+BeiDou dual-mode chip, so you don"'"t need to worry about compatibility issues and latency problems.Powered by the USB cable, automatically powers on and off according to the engine ignition.Compatible with all vehicles around the world, with fast speed refresh and no latency.Just mount the device near the dashboard or use the 360-degree rotating suction cup mount to the windshield.Specification:Model: G4SScreen Size: 2.5 InchMaterial: ABS+PCScreen Type: LEDApplicable models: UniversalColor: Green, WhitePackage Included:1 x G4S HUD1 x Micro USB Cable1 x Anti-Slip Gel Pads1 x Rotary Holder1 x English ManualDo drop