Features: High-brightness LED head-up display is clearly visible no matter it is day or night. Colorful ambient light can automatically change color according to the engine speed or vehicle speed. 6 display modes, supporting display of vehicle speed, water temperature, voltage, speed, mileage and travel time after flameout. With multiple alarm functions, speed alarm, water temperature alarm, overspeed alarm, low voltage alarm, and shift reminder. Low power consumption, you don\'t need to worry about the battery power consumption in the car. Connect to OBD interface, plug and play.