【Head-Up Display】Our HUD delivers real-time driving speed with exceptional clarity. Please note: while similar designs exist, our proprietary VJOYCAR Chipset is what sets us apart. Engineered for a true 10 Hz high refresh rate, it ensures instantaneous speed updates. Customers consistently report that our display refreshes faster and smoother than others. We invite you to experience the difference—if you’re not completely satisfied, we offer a full refund.
【GPS Speedometer】This device calculates speed using GPS satellite data, independent of your vehicle’s engine or internal systems. It requires no wiring, won’t interfere with your car’s electronics or OBD port, and works with virtually any vehicle—from cars, trucks, and motorcycles to boats, scooters, and more. Note: GPS-based speed may vary by 1%–5% compared to your dashboard (which uses wheel rotation), but it matches the logic of police radar systems for accuracy.
【Installation】Designed for absolute simplicity: no buttons, no setup, no manual needed. Just connect the included USB cable to the display and your vehicle. If your car has a USB port, plug it in directly; if not, use a car adapter (not included). It’s truly plug-and-play.
【Automatic On/Off】The unit powers on automatically when your car’s ACC is detected, displaying speed in large, easy-to-read digits. It shuts off just as seamlessly when the ignition is off, with zero power draw since it has no internal battery.
【Warranty & Support】Initial use may require 10–30 seconds to acquire a GPS signal. Please note: it will not work indoors, in underground parking, or in tunnels. We offer 24/7 customer support and are always happy to help. Thank you for choosing us.