[Accurate Data] Our speedometer combines GPS and BeiDou dual data sources and uses a Type-C interface to ensure accurate vehicle speed measurement. A high 10 Hz refresh rate provides real-time updates without delay, including overspeed warnings, elevating your driving safety to a whole new level. [Adaptive Brightness] The HUD display features automatic light sensing technology that automatically adjusts brightness according to ambient light. It provides optimal visibility during the day and a clear, undisturbed display at night, allowing you to comfortably read while focusing on the road ahead. [Clear Display] Our speedometer features a large 3-inch screen and integrated compass function, utilizing advanced metal nanotechnology to minimize reflections and deliver an ultra-clear, easy-to-read display. A built-in sunshade effectively prevents glare from direct sunlight, further enhancing readability in all lighting conditions. [Automatic Operation] The GPS speedometer is conveniently designed, automatically turning on when the vehicle starts and off when parked. Say goodbye to cumbersome manuals and effortlessly enjoy the pleasure of fuel-efficient driving, allowing you to fully immerse yourself in the driving experience. Universal Installation: This multifunctional GPS speedometer is compatible with all vehicles equipped with a USB interface, fitting perfectly in cars, electric vehicles, buses, pickup trucks, trucks, scooters, hybrid vehicles, golf carts, boats, trains, bicycles, motorcycles, and even diesel vehicles. Easy installation allows you to instantly experience a safer and more convenient driving experience.