Comprehensive Car Digital Speedometer with GPS-enabled Heads-Up Display - Functionality and safety benefits - GPS-enabled heads-up display shows speed and travel direction indicators. - Dual alert system warns for overspeed and driver fatigue; audible alerts activate after 8 hours of continuous driving or when speeding, helping you stay safer on the road. - Intelligent automatic brightness - Built-in light sensor automatically adjusts display brightness for optimal visibility in day or night. - Manual brightness adjustments are available for user preference. - Advanced windshield HUD - Turns the windshield into a real-time data projection screen. - Clearly displays speed and other critical data without cluttering the sightline, supporting safer driving. - Universal compatibility and easy setup - Designed for universal 5V vehicle compatibility and connects via USB. - Initial setup includes locating satellite signals, indicated by a flashing satellite icon, to ensure accurate performance. Use scenarios - Long highway driving - Keeps you aware of speed, shows direction, and provides fatigue and overspeed alerts to encourage safer long-distance travel. - City and night driving - Automatic brightness adapts to lighting, maintaining clear visibility of speed and data without glare. - Quick setup for multiple drivers or vehicles - Plug-and-play USB connection with universal compatibility allows rapid setup and consistent data projection across vehicles.