... warranty 2.0 mini portable speaker for your notebook ,computer ,mp3,mp4,computer,laptop ,OME color Specification 1.RMS:2.5Watts ... and concise design,graceful appearance and smooth lines, suit for business gift5.Only one control cable with built in sound card ... amplifer circuit needed, easy to operate6.Support for laptop, desktop, MP3, MP4, tape recorders, learning machines, radios and other audio device ...