Mp3/ Mp4 Mini Speaker USB mini speaker for PC and notebook Built-in active amplifier Pure and ele Mp3/ Mp4 Mini Speaker USB Mini speaker for PC and notebookBuilt-in active amplifierPure and elegant sound qualitywith unsurpassed effectoutput:RMS 3W+3W; S/N Radio:65db Isolated;Rate:45dB; Frequency Response: 50HZ-20KHZRated Output: 2×3WPower:5V/1ASNR:>85dBPower suppllied by Computer USB port 

Mp3/ Mp4 Mini Speaker USB