Features: *4 inch 480*272(QVGA) digital LCD color screen, with touchable screen *AT440 processor (300 Mhz) *SIRF Star III high sensitivity receiver, more 20 channels *OS: Based on Microsoft Windows4.2 *Multi-language support with input method *Internal Lithium battery *USB 1.1(full-speed) *Support WMV, AVI, ASF, MP3, WMA, WAV media format *Text Format Files Browser (E-book) *Photo Scan: JPEG, BMP *SD memory card expansion *Built in speaker *Dimension: 120*70*17 mm Accessories: Main Unit Car lighter adapter AC Adapter Carmounting bracket User Manual SD Card reader OR USB line