Features:
• 2.1 Stereo: two 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
• Foldable table legs
• 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/OSX

Specification:
• Dimension -- 645 x 375 x 40 mm
• Stand -- 280mm
• Weight -- 5kg G.W.
• Material -- ABS Plastic
• Power Requirement
-- USB Bus Power
-- Battery Type: D/Voltage: 1.5V x 4
• Cooling Fans
-- RPM: 1500
-- CFM: 28
--Noise Level: 25dbA
• 2.1 Stereo Speakers
-- Amplifier: Class D
-- Speakers: 5W each / Subwoofer: 10W
-- Rated Impedance: 4Ω