Extra Bass/ Live Sound Mode/ Totally Waterproof And Washable/ Totally Dustproof/ Totally Rustproof/ Line Light/ Flashing Strobe/ Up To24 Hour Battery/ Wireless Party Chain/ Compact, Lightweight Design/ Wireless With Bluetooth Technology And NFC/ Mica Reinforced Speaker/ Dual 48mm Speaker Units/ USB Charging Port/ Easy Button Control/ Black Finish