This portable Bluetooth stereo speaker is suitable to use with a mobile phone or any other device with Bluetooth. It has 2 powerful 3W speakers & a music playback time of up to 5 hours, all with a charging time of only 2 hours. It has easy to use previous track / volume down & next track / volume up buttons & a play / pause button. A USB (Universal Serial Bus) charging cable & 3.5mm audio cable are included in the box along with a drawstring bag that will protect the speaker when on the move.