Precise, realtime speed readings: Dual GPS + BeiDou chipset delivers accurate speed measurement with fast refresh rates so you always see current speed information while driving. Plugandplay installation: Simple setup — connect the included USB cable to a power source and the unit is ready to use without complicated configuration. contrast, easytoread display: Large white digits on a black housing improve visibility in low light and daytime. A builtin sunshine hood reduces glare for clear reading in direct sunlight. Broad vehicle compatibility: Works with cars, trucks, buses, escooters and ebikes. The unit supports general mounting adaptability for installation on a wide range of vehicle types. Reliable, focused functionality: Designed specifically to provide clear speed information quickly and consistently, without unnecessary features or complex menus. Key attributes Function: Digital speed display using GPS + BeiDou position and speed data. Power: USBpowered (plug in to operate). Display: Large white font on black housing with integrated sunshine hood for glare control. Compatibility: Fits cars, trucks, buses, escooters, ebikes; adaptable mounting for general vehicle use. Performance: Fast refresh rates for uptodate speed feedback. Practical use scenarios 1) Highway and city driving: Keep a constant, accurate view of your speed to help maintain safe speeds and comply with limits in changing traffic conditions. 2) Commercial vehicles and fleets: Truck and bus drivers get continuous speed feedback for safer driving and easier monitoring in longhaul operations. 3) Micromobility and cycling: Escooter and ebike riders obtain precise speed readings for better control in urban environments and on mixeduse paths. What you get A straightforward, dependable speed display that installs quickly, reads clearly in sunlight, and works across multiple vehicle types — all powered via USB and using GPS + BeiDou for accurate, fastupdating speed information.