Monitor real-time GPS-based vehicle speed with a compact windshield projector featuring automatic brightness adjustment and simple USB installation. GPS Speed Tracking: Uses GPS signal to calculate and display real-time vehicle speed, independent of the car's onboard computer. Automatic Brightness: A built-in light sensor adjusts display brightness for clear visibility in changing daylight and night conditions. Plug-and-Play Setup: Connects directly to any vehicle's USB port; no wiring, cutting, or professional installation required. Windshield Projection: Projects speed data onto the included reflective film, keeping the display within the driver's line of sight. Fixed Speed Unit: Displays in a single fixed unit (kilometres per hour); confirm the correct light-colour variant before ordering. Specifications Material: ABS / PC Polymer Dimensions: 70 x 42.8 x 20mm Power Input: DC 5V via USB Compatibility: Universal, any vehicle with a USB port Included: 1x Head-Up Display Unit, 1x USB Cable (2m), 1x Reflective Film, 1x Double-Sided Tape, and 1x User Manual.