1. Use Sigmatel 3502 IC 2. Support MP3/WMA/WAV 3. Digital Voice Recorder 4. Six kinds of EQ preset (Normal, Rock, Jazz, Full bass, Pop, Classical) 5. Finve kinds of play modes (normal, repeat one, repeat all, random, intro) 6. A-B repeat function 7. LCD display 8. ID3 tag display 9. Key lock function 10. USB port (USB2.0) 11. Support SD/MMC card (upto 2GB) 12. 1 x AAA battery 10 hrs playback 13. FM function (optional) 14. Compatible 128MB, 256MB, 512MB, 1GB, 2GB