1. Portable HDD function: USB 2.0 interface, support SD/MMC Card WINDOWS management 2. Playback function: can play AV programs as MPEG4, DVD, VCD, MP3, CD,etc., and JPEG pictures. 3. Edit function: can do the operations as copy, remove, rename, delete, and etc, for the files and folders in the HDD.4. Large capacity: can adopt the HDD up to 200GB.5.For example: the 40G HDD can save 20,000 MP3 songs or 70 MP4 movies.6. Search playback, repeat playback, A-B segment repeat playback, etc.7. 9-picture playback function for the picture, 12 kinds of pictures playback transition effect. 8. CVBS and VGA video output, can be connected to the TV or computer display. 9. TV system: PAL, NTSC, AUTO.10. Full function remote control, more convenient. 11. Stereo audio output.12. Only: 138 x 80 x 19 mm 13. Power: DC 5.6V14. Power Consumption: 800mA 15. Video Signal system: AUTO/ NTSC/ PAL 16. Playable programs: MPEG4(DIVX XVID AVI), DVD, SVCD, VCD, JPEG, MP3, CD-DA17. Video Output: 1Vp-p +/- 0.1 (75Ω) 18. Audio Output: 2.0 Vrms +/- 0.3V 19. Features of the audio signal output: Frequency response: 20Hz-22kHz S/N: more than 90dB (1kHz 0dB)20. Audio distortion: lower than the test level Crosstalk: more than 80dB (1kHz 0dB) 21. HDD: need assemble in addition 22. Remote control system: infrared impulse, DC 3V, button battery