1. MP3/WMA player with portable USB flash drive 2. Full Speed USB2.0 interface. 3. Alloy aluminum housing (blue, red and silver colors) 4. Build in lithium rechargeable battery for long hours playing 5. Wireless earphone 6. Voice-Recording: at 3~4 hours 7. Variable bit rate from 64 kbps to 128 kbps for recording 8. Auto-Power-OFF 9. ID3 Music title information 10. 80db Output-Power; 11. Ultraviolet radiation resist parameter: UV 380~400 12 . Support OS: Windows98/2000/ME/XP 13. Available flash memory size: 64MB, 128MB, 256MB, 512MB, 1GB