1. OLED display, Music file format: MP3, WMA ,etc. 2. Support Windows 98/SE/ME/2K/XP, Mac. 3. OSD in 16 languages; ID3 lyric display. 4. Equalizer modes:normal/classical/rock/jazz/pop/soft/DBB. 5. Playing mode: Normal/random/folder/repeat folder/repeat one/repeat all/introduction. 6. Sleeping mode, power saving, Power off options 7. Contrast rate and backlight time control. 8. Record (hi-fi digital MP3 file ) / A-B repeat /FM record function. 9. Bulit in rechargeable lithium battery ,playing 4-5 hours. 10. U disk function, firmware upgradable. 11. Animation menu operation. 12. Memory status indication.