2,Audio format:support MP3,WMA,ASF,WMV
3,USB disk:Need not drive(except WIN98)
4,Auto power off:auto power off within 30sec
5,Port:USB2.0
6,Storage:128M/256M/512M/1G/2G/4G
7,Battery:built in lithium battery, display 6H
8,Color:red and blue.