Music Format: MP3/WMA/WAV
Capacity: 64M, 128M and 256M ,512 M and 1G
Playing time: about 400 minutes after fully charged
Electronic disk: Mobile storage support
Equalizer Mode:5 different EQ modes(Jazz/Classic/Rock/POP/Normal)
Volume: 32 step volume adjustment
PC port: USB 2.0 full-speed
Battery: Built-in rechargeable Li-ion battery
Operating System: Windows 98/Me/2000/XP