7" Car dvd,in-dash HD digital screen special car gps for Audi A3 with Radio,TV,BT, IPOD,GPS,USB/SD CARD, S/W ... internal, external (optional), this machine comes standard with built-in GPS.Navigation handwriting function: In the navigation state, can be carried out ... input, the operation more convenient and faster.Navigation and auditory function: in the absence of navigation voice prompts, they can ...