xp & win7 compatible can connect with PC ,Mobile Phone , MP3 player,and iPod ,iPhone etc USB audio for pc/USB 2.0 full speedclass D 1.2Wx2 ch THD 10%vol-/+,mute key3.5mm Aux in , can connect with PC ,Mobile Phone , MP3 player,and iPod ,iPhone etcxp & win7 compatibletwo speakers blue backlightMany colors selection: white/ pink / green/ red USB speaker