Bring the party wherever you go with iBT5880 color changing rechargeable Bluetooth speaker. The iBT5880 has two audio sources: Bluetooth wireless audio streaming from your Bluetooth-enabled device, or direct audio via the aux-in jack. Built-in mic, digital voice echo cancellation and answer/end controls make speakerphone use a pleasure. Passive sub-woofer for enhanced bass. Five color changing modes with multiple colors at the same time for fun, fabulous color eff ects. Operates on internal rechargeable battery OR 100V- 240V universal AC adapter.