1. Memory Capacity: built in 20GB HDD (with SD/MMC card slot). 2. Screen Size:7 inch (with speaker , remote control and extractable rechargeable　　Li-thium battery.). 3. Screen Specification:260K color TFT, 320(RGB)*240,support high pixels photo. 4.Video playback:supports video playback of MPEG1/2/4 in format of mpeg dat,vob(partial),avi,asf,mp4,wmv etc. 5. Audio playback:support playback MP3, WMA, aac. Stereo MP3 decoding , lyric display ,EQ effect and background music. 6. Audio recording: support　MIC and Line-in recording. 7. Video output:AV out to TV. 8.Photo playback:supports　photo playback in formats of jpeg,gif,bmp, supports MTV playback? main interface background settings?photo rotation?decrease and increase?1/4/9　picture display. 9.E-book function: supports E-book in format of *TXT, supports book-mark . 10.Files management:supports　files create, move, copy, paste, rename and file information displays. 11.Mobil HDD function:1.8 inch built in HDD. 12.Multi-tasks function:supports playback music while displaying photos. 13.Multi-languages :supports simple /complicated Chinese, English,German, French, Italian, spanish, Deutschland, Pautuguese. 14.Set up:background brightness,　text color, focus text, focuscolor, auto LCD off , auto power off, photo interval and music play mode. 15.USD speed:USB 2.0 16. Software upgrading: TI solution chip DM320 DSP,ARM chip, may have new functions by upgrading software. 17.Computer System : Windows98/98SE/ME/200/XP/ MACOS9.0/or higher.