Soncras First Generation Portable Vibrating Speaker With Revolving Audio Amplifier, Connect To PC, Laptop, iPad, iPod, iPhone, MP3 Player And Gaming Devices Etc. Welcome To The Sound Of Tomorrow, New Generation Cutting End Of Technology The First Generation Speaker Applies High Powered Magnets That Convert Audio Waves Into Vibrations Almost Any Surface Can Serve As Vibration Emitters; Like Glass, Wood, Metal, Ceramics Etc. Sound Produced is Omni-Directional, Engineered To Generate Invisible Sound To Flat Surface Versatile 3.5mm plug Allows You To Connect To Your Favorite Audio Or Computer Device