 2.1 Stereo: four 5W speakers & one 10W subwoofer.
 Powered through USB from your notebook or 4 Size-D batteries
 No additional software or driver needed.
 Built-in ultra-silent cooling fans.
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 Audio Input for MP3 players, Portable DVD players, and Game consoles
 Works with all laptops
 Control buttons: Power On/Off, Fans On/Off, Mute, Volume Down, Volume Up
 Compatible with Win98 SE/ Win ME/ Win 2000/ Win XP/ Win Vista and MAC OS9/O