1)Portable mini speaker 2)Vibration tech 3)Output power:5W 4)Frequency: 100Hz-18KHz 5)Audio Source:PC,MP3,MP4,MD Portable mini speaker 1. Direction to usageWhen you use Touching ,please put it on hard surface upward ,and let the pedestaltouchthe surface tightly.Insert the line's miniusb end to the sound box,connect theaudioline with the earphonejuncture of computer,mp3 and so on,besides, ...