Ugreat - 4' Car hud Speedometer - Universal Windshield mph/kmh Display - Digital Speedometer - gps Speed Detector - Overspeed Alarm, usb Plug and Play

【4" LCD Screen】This mini HUD has a 4-inch screen, full HD display. Built-in light sensor helps the head-up display to automatically adjust the brightness according to the environment. This car HUD built in a sun visor helps you read the data clearer and no double ghosting. 【Rich Content】The basic driving data you want to know can be displayed on this vehicle head-up display, including time, driving time, driving speed, driving distance, satellite number, driving direction, overspeed alarm, fatigue driving warning, blue ambient light, etc. Freely switch between KMH and MPH. 【Plug and Play】The smart vehicle HUD display features USB plug and play operation. Simply mount the unit near the dashboard. Automatically sync the Power on and off according to engine ignition. Compact design, allows you to keep your eyes always on the road, no need to stick a reflective sticker on your windshield, safer for driving. 【Safety Warning & Multiple Display Modes】Overspeed warning and fatigue driving