mini speaker,portable laptop mini speaker 1,DC 5V 2.USB power 3.RMS:4W 4.MP3/WMA format decoder Mini speaker, plastic speaker, ... mp3 speaker, multimedia speaker,portable laptop mini speaker,USB speaker1.MP3/WMA format decoder2.Volume control3.Work ... speaker , 4ohms9.Frequency Response: 150-18KhzProduct size:83*85*105 mmBox size:188*110*98mm.Carton size:550*384*310MM Package:40PCSN.W ...