mini usb vibration speaker

This is the latest vibration speaker system which turns virtually anything into a speaker! Plug in your music player and stick it on to any surface or object and you instantly have a mobile loudspeaker, on the go beautiful music. Small and light, making it easy to carry # Patented products # new design # weight only 28g Specifications: 1) Rated Power: 2.5W 2) Oscillator Impedance: 4Ω 3) Frequency Response: 150Hz - 15KHz (depending on the resonance interface) 4) Operating