Features: Real-time update of vehicle speed to avoid violations. After installation, elevate-the visible vehicle-condition, without frequent viewing of the central control screen, to avoid accidents. Energy saving, automatic shutdown after flameout (starting and closing with the central control, automatic shutdown). Intelligent chip, real-time synchronization with central control data.Head up display, safe driving, on-board original data, non-destructive installation, the air outlet can be moved at will. Speed alarm, fatigue driving reminder function, improve driving safety. Specifications: Material:ABS Size: Approx.7.5x1.7cm/2.95x0.66inch Color:Black For Tesla-Model 3 Y Note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1x Car HUD