Features:Real-time measurement of the vehicle roll and pitch angle during driving, the range is -40~ +40. The current altitude of your car can be measured.GPS satellite positioning, make sure you don"'"t go in the wrong direction. Perfect for traveling and driving adcentures.Obtain the current driving speed, with over speed alarm function, as well as display the local time.Real-time voltage monitoring, can avoid safety hazards caused by too high or too low voltage, prolonging the lifespan of the battery.Suitable for all vehicles, such as vans, trucks, buses, cars, off-road cars, SUVs, and other Vehicles.Specification:Power supply: DC10V~30V;Operating temperature: -40C~+80C;Pitch angle: -40~+40;Roll angle: -40~+40;Voltage measurement range: DC10V~30V;Voltage measurement accuracy: 0.5V; Speed accuracy: GPS data refresh rate: 1s;GPS hot start: 1sAVGWireless transmission frequency: 2.4GHz;GPS cold start: 32sAVGPackage Included:1 x Car HUD1 x Cigarette Lighter Power Cable1 x Refitted Power Cable1 x HolderAbout Inclinometer only:Feature:100% brand new and high quality. With free rotation type, its high degree of sensitivity, providing slope and inclination. Learn road conditions, increase traffic safety. Ergonomic design, adjustable viewing angle, fine workmanship. It can accurately show the exact degree downhill, uphill. Details can locate the slope angle of the left or right. Adjustable stand can be installed in any position, as long as you can maintain a balance. Built-in LED lights. Practical and durableSpecification:Material: ABS+PMMA Size: As picture show Accuracy: 2 Package Included:1 x Car Dedicated Slope Instrument Functions: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: G4S Screen Size: 2.5 Inch Material: ABS+PC Screen Type: LED Applicable models: Universal Color: Green, WhitePackage Included:1 x G4S HUD 1 x Micro USB Cable 1 x Anti-Slip Gel Pads 1 x Rotary Holder 1 x English Manual