This portable Bluetooth speaker is suitable to use with a mobile phone or any other device with Bluetooth. The multipoint feature allows two devices to be paired at the same time & it is possible to easily switch between the music on each phone. The built-in microphone allows the speaker to be used to make & receive calls via a Bluetooth enabled mobile phone at the press of one button. The powerful 3W speaker will provide loud clear music & has a music playback time of up to 4 hours.