MH Heads Up Display for Car, Digital GPS Speedometer, 5.5 inch HUD GPS Speed MPH/KMH, Over Speed Alarm, Fatigue Driving Alarm, Automatic Brightness Adjustment for All Vehicles
All-in-One Digital GPS Speedometer HUD Display: 5.5 inch Large GPS Speedometer features a clear multi-info screen that shows real-time speed (KM/H/MPH), driving direction angle, satellite quantity, trip distance, time - all at a glance to meet every data need during your drive, no more frequent dashboard checks
Customizable Alerts & Settings: Set an overspeed alarm threshold (0-250 units), it triggers a buzzer alert when speed exceeds your set value, fatigue driving reminders (1-8 hours), adjust brightness (auto or 11 manual levels), calibrate speed reading, set time zone, and switch between MPH or KM/H units via the intuitive button controls
Auto & Manual Brightness for Day/Night Clarity: The digital GPS speedometer HUD comes with adjustable brightness (0-11): 0 = auto-sensitivity (automatically adapts to day/night light for optimal visibility), while 1-11 (1=darkest, 11=brightest) lets you manually set it—no more squinting at the screen under strong sunlight or straining eyes at night
Built-In Compass & Anti-Drift Stability: Includes a reliable compass (N/E/W/S) that works once satellites are locked, and minimizes data drift. While temporary satellite instability may occur in underground parking lots/tunnels, it quickly regains accuracy on open roads—keeping you oriented and informed
Simple Operation & 5V Safe USB Power: With intuitive wave button controls: long press to enter settings menu, short press to switch display modes, left/right presses to toggle data (speed/direction/time/satellites). Powers via 5V USB (safe, no higher voltage allowed) for hassle-free setup— suitable for all drivers, even beginners
Please note: like most GPS-based HUDs, trip distance is calculated only when the device is powered. It does not retain or accumulate mileage after the vehicle is turned off, as it relies solely on GPS signal and continuous power to track travel data