Feature:1. High Refresh: HUD speedometer features GPS and Beidou dual chipsets and high performance processing chip, with a 10Hz refresh rate for smoother display.2. Power Supply Ways: Car HUD can be powered by car USB or cigar lighter, and will automatically power off when the vehicle is turned off to prevent power theft.3. Large Font LED Display: HUD speedometer is equipped with a LED cold light display screen, featuring modern design and large fonts for clear visibility day or night.4. Universal Compatibility: This smart GPS speedometer is suitable for all vehicle types including new energy vehicles, hybrids, motorcycles, fuel cars, public buses, trucks, etc.5. Compact Design: With a small and ergonomic body, the HUD digital speed meter is designed to fit in any corner without obstructing the driver's view.Specification:Item Type: Digital Speedometer Body Material: PVC PlasticSize: Approx. 8x6x3.5cm / 3.15x2.36x1.38inRefresh Rate: 10 Frames/SecondScreen Display: LED Cold Light ScreenFitment: Replacement for All Car ModelPower Supply: USB Car Power SupplyBuilt in Battery: NoWaterproof: No.Package List:1 x Main Unit1 x USB Cable2 x Double Sided Tape1 x User Manual