Bluetooth wireless 10W speaker with high performance sound. Also acts as a portable charging facility for mobile devices (using an Erbauer EXT compatible battery) and designed with protective rubber bumpers for durability. Aux cable supplied. Part of the Erbauer EXT and EXT EliteCell, one battery system, running multiple tools for increased flexibility. Compatible with all Erbauer 18V EXT and EXT EliteCell batteries and chargers.