*Dimensions: 85 x 90 x 182mm *Color: silver, black, PC color *USB and other alternating currents power input can be chosen, suitable for computers, MP3 player *3" Full Range Driver *RMS: 3 W?2 *P.M.P.O.: 200W *Frequency Response:200Hz-18 KHz *S/N ratio:70dB *Control: Volume, Power, LED, Jack Other Information Email: MSN: Tel: +86-755-29950835 Fax: +86-755-29950853 Website: