... )professional mini mp3 portable speaker (2)high quality sound without distortion (3)OEM avialable Specifications(1)professional ... 3)OEM avialableFeatures:1,atractive colors available;2,professional digital audio play, sound clear, bass powerful;3,magnetically shielded and noise ... and the damping in the cabinets, making high quality sound without distortion;4,frequency response curve design, cooperates ...