Speedometer - Digital GPS Speedometer - Head-up Display - KMH/MPH - With driver fatigue alert and speed warning - For all vehicles

[Dual GPS/Beidou Module] The GPS odometer receives satellite signal data via a dual-channel GPS/Beidou satellite module, allowing you to drive without tilting your head, significantly improving driving safety. [Key Features] Equipped with a built-in head-up display (HUD), GPS odometer, fatigue warning, speed alert, satellite time display, and compass display. Switch between kilometers per hour (KMH) and miles per hour (MPH), with automatic switching between speed and time, for a more user-friendly driving experience. [2.5-inch Smart LCD Screen] The digital GPS odometer has a built-in light sensor that automatically adjusts the screen brightness according to ambient light. This ensures clear and easy reading and protects your eyes. *Do not block the optical sensor port located on the top of the device. [Wide Application] Upgraded Type-C data cable with a DC 5V-24V voltage range for safer use and automatic synchronization based on engine ignition. Compatible with all cars, RVs, SUVs, trucks, vans, trains, motorcycles, and boats. 2.5-inch Smart LCD Screen: The M30 digital GPS speedometer features a built-in light sensor that automatically adjusts the screen brightness to ambient light for easy reading and eye protection. The backlight provides a clear display during the day and a soft, glare-free glow at night, allowing you to easily read information on the screen while driving and keep your eyes on the road. One-Touch Operation: The head-up display has a single button for one-touch control of multiple functions, allowing you to seamlessly switch between them. Type-C Power Supply: The digital odometer connects to a Type-C cable for plug-and-play operation. The power supply is automatically synchronized when the engine is turned on and off, preventing energy drain. Accurate GPS Compass: The GPS compass provides precise positioning, synchronized real-time data display, and satellite data acquisition, making it unaffected by weather conditions.