mini speaker,portable laptop mini speaker 1,DC 5V 2.USB ... speaker, plastic speaker, mp3 speaker, multimedia speaker,portable laptop mini speaker,USB speaker 1.MP3/WMA format decoder2.Volume ... 3.5mm jack4. li-ion Battery inside5.Power Led indication and li-on battery charging indication6.Power Supply: DC ... 5 Volt(li-lon Battery inside) USB power cord7. Output Power: 2w+2w8. ...