... 6.0 Operating system Built in GPS antenna and it also can connect external antenna Functions: Navigation, MP3, MP4, JPG picture,E-Book ... etc.. Built-in two high quality speaker, Support WAV, MPEG,MPG,ASX,DAT,ASF,WMA,MP3 ... 6.0 Operating system Built in GPS antenna and it also can connect external antenna Functions: Navigation, MP3, MP4, JPG picture,E-Book ...