Feature: 1. Solve the trouble of down your head to see dashboard while driving, allows your eyes ahead to ensure driving safety. 2. Can shows driving information like driving speed, altitude, acceleration time/100km, single driving time, single driving distance, driving direction. 3. Alarm function, overspeed alarm, low voltage alarm, fatigue driving warning, less possibility of traffic accidents. 4. The driver can observe data on the front window glass, to help the driver maintain the best condition during driving. 5. Multiple operation interface modes and colors can be switched freely, bringing you more fun and strong sense of technology. Specification: Item Type: Head Up Display Material: ABS Color: BlackSize: Approx. 30 x 55 x 90mm/1.2 x 2.2 x 3.5inFitment: UniversalInstructions: Just insert the USB cable into the car plug and connect it to the car cigarette lighter interface, when the car engine starts, the head-up display (HUD) will display.Function: Can shows driving speed, altitude, acceleration time/100km, single driving time, single driving distance, driving direction.Alarm Function: Overspeed alarm, Low voltage alarm, Fatigue driving warning. Package List: 1 x Host 1 x USB Cable1 x Car Plug1 x Anti-Slip Mat1 x Reflective Film1 x Manual Note: Please allow 1‑3mm error due to manual measurement. Thanks for your understanding.