Mini Dwarf Vibration Speaker 1.Get different sound on different surface 2.Portable , cute and fashion 3.Novel design Drawf resonance Speaker:Get different sound effect on different surface Novel design, high eleganceBody small, easy to carry, simple operation, saving energy and securityUsing high-tech such as resonance theory Output :3W(rms)3.5 mm stereo plug compatible with all MP3, MP4, CD, DVD ...