GPS Speedometer for Car, Digital Speedometer for Car With Large MPH/KMH GPS+BDS Dual Satellite, Compass, Auto Brightness, Overspeed & Fatigue Alarm, USB Plug & Play for All Vehicles

Universal GPS Speedometer for All Vehicles: Unlike traditional speedometers, this hud for car device collects speed data directly from GPS satellites without accessing the car engine or circuit board. It is completely safe and universally compatible with all vehicles, including SUVs, trucks, boats, motorcycles, golf carts, and more. The displayed speed aligns with radar logic (with a slight 1%-5% variance from tire-based dashboard readings), ensuring accurate real-world speed monitoring.
High-Definition Display & Auto Brightness Adjustment: Speedometer for car equipped with an advanced light-sensitive sensor, the screen automatically adjusts its brightness based on ambient lighting conditions. Whether driving under strong sunlight during the day or in dark environments at night, you will always enjoy the clearest visibility without manual intervention. (Note: Ensure the small sensor hole on the back of the display is not blocked to maintain optimal auto-brightness performance).
Advanced Dual-Core Chip for Smooth Performance: Heads up display for cars built with a high-performance dual-core processor and dual-running memory, this HUD ensures smooth, high-speed operation with minimal data delay. GPS digital speedometer provides real-time tracking of your driving speed, offering reliable data support to enhance your driving experience and safety on the road.
Hassle-Free Plug & Play Installation: Car speedometer designed for ultimate convenience, this speedometer requires no complex settings, buttons, or manual reading. Simply connect the included USB cable to the device and plug it into your car’s USB port (or use a standard car adapter if no USB port is available). The system is ready to use immediately upon connection.
Overspeed Alarm: This gps speedometer mph features a customizable three overspeed alarms can be set simultaneously, allowing you to set three distinct warning thresholds at 150, 180, and 200 (supporting both MPH and KMH). When your vehicle exceeds any pre-set limit, the device instantly triggers a rapid flashing LED alert. This highly visible visual reminder captures your attention immediately, prompting you to slow down without relying on sound. It acts as a vigilant co-pilot, helping you avoid speeding tickets and ensuring a safer driving experience on highways or city streets.
Smart Auto On/Off & Power Protection: The digital speedometer device features intelligent ACC detection: it automatically turns on and displays large-font speed data when the car starts, and shuts down completely when the car turns off, consuming zero power when idle. Important: The working voltage is strictly 5V. Please do not use high-voltage or fast-charging adapters, as this may damage the product and affect its lifespan. Allow 10-30 seconds for GPS signal acquisition upon first use; note that it does not function indoors or in tunnels.