Features: 1. Plug & Play: After connecting to the power supply, car HUD head up display can work directly without any other operations. No skip speed, more coherent and smooth display. 2. Innovative Design: Self equipped sunshade hat, even in the sun smart digital speed meter can also receive praise. And large font, clearly visible during the day and night. 3. Note: This device is a GPS digital speedometer, and the speed is collected from satellites. So if you test at home or a parking lot, perhaps the speed cannot be displayed correctly. Please conduct the test outside the vehicle with good signal. 4. Widely Used: Built-in GPS chip, car HUD head up display is suitable for all cars, buses, trucks, bicycles, scooters. 5. Satisfaction Guarantee: We strive to provide each customer with the highest standard of customer service to ensure you have a pleasant shopping experience. If you have any issues, inquiries or need assistance, please feel free to contact us directly. Specification: Origin: Mainland China Unit: kilometer Material: ABS+PC Color: As shown in the picture Size: 80 * 54 * 31mm/3.1*2.1*1.2in Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement.