... , USB download charging, independent charging.2.compatible with CD player,PC/MAC,MP3 player,MP4 player, DVD player3.Mute function4.suitable for: Ipod, Sony ... Ericsson, NOKIA, SAMSUNG mobile phone,MP3 player and so on.Output: 2x5w (stereo)respond frequency: 100HZ-18KHZInput ... size:265*225*116mmCarton size:595*375*470mm 20pcsN.W:17.6kg G.W.:18.43kgWe got the FCC, CE, ROHS ...