Polaroid PBT3001BK Mini Bluetooth Speaker, Slim, Single-Tower Design (Black) Pair any Bluetooth-enabled device with the speaker and enjoy music, podcasts and more. Wall Connected external power supply - never ran out of charge. Built-in amplifier with super bass air tube design for rich, clear sound. Speaker has an aux port for the option of wired use when Bluetooth-connectivity is unavailable. The speaker comes equipped with a stand that allows for it to be conveniently propped up on most flat surfaces.