HUD Display OBD II GPS: display driving data on the front windshield, such as vehicle speed, rotation speed, water temperature, voltage, single mileage, etc.; avoid the driver from looking at the instrument while driving and causing unsafety. Drivers can instantly read driving information and use the HUD to always be at their best. Clear display on large screen: nanotechnology-high-definition projector, eliminates unnecessary reflection and makes display information clearer, very clear in sunny and rainy days. Multi-color makes it look more vivid and comfortable. Light sensor: The HUD can automatically adjust the brightness according to the environment, bringing more fun and sense of technology to your driving experience. PLUG PLAY: Through the key function, you can easily set and switch various functions you need. There are two USB ports, you can choose one according to your needs (Note: Only one interface needs to be connected. Plug both ports at the same time OBD2 mode is only suitable for most vehicles made after 2008. GPS mode is suitable for all vehicles. (If you The car is not compatible with OBD, please use GPS mode.) . Safe Driving: This car HUD device has error code detection function and alarm. Such as low voltage alarm, overspeed alarm, fatigue driving alarm, high water temperature alarm, engine fault code alarm. These reminders help you avoid accidents, keep your car in good condition, and keep you on the road safely.