4.3inch GPS tracker MP3/4,Ebook,photo viewer Win CE 5.0 system ... WinCE net 6.0 Operating system Built in GPS antenna and it also can connect external antenna Functions: Navigation, MP3, MP4, JPG picture, ... .30WinCE net 5.0 Operating system Built in GPS antenna and it also can connect external antenna Functions: Navigation, MP3, MP4, JPG picture,E ... IN: 5V AC-127D fashion 4.3 inch touch creen GPS tracker