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. 2M pixels camera, may take photos and record video. 18.Computer System : Windows98/98SE/ME/200/XP/ MACOS9.0/or higher.