GV-388 is a car navigation host with accessories such as a frame, car charger, and travel charger. The host has features such as a power button, menu button, SD card slot, antenna, and headphone jack, and can be connected to a computer via USB for data transfer and charging. Download the program software to the memory card using a card reader and fix GV-388 on the frame. GV-388 can be charged using a travel charger, car charger, or USB cable.