Product name: 3.5" touch screen gps navigation Model no.: k616 1) 3.5" tft lcd 2) two track high quality sound output for connecting earphone 3) built in high precision sirf star iii gps system 4) built in gps antenna and it also can connect external antenna 5) supports sd card navigation software 6) audio player support: mp3, wav, mid 7) video player support: mp4 , avi, asf, wmv 8) built in one rechargeable lithium battery, dc 12v, charged by ac charger Or car charger 9) supports both of lcd and cvbs display 10) photo browser support: jpg, png, gif, bmp 11) txt format e-book