Bi-directional sound offers room-filling sound from wall-to-wall. High power 160 watts. Built-in battery offers up to 12 hours of music. IPX5 Rated weather resistant against water and dust. Party Lights+ - set the mood with festive LED lighting effects. Group Play - connect multiple Samsung Sound Tower devices for richer sound experience. Party Sound mode - enhanced sound and punchy bass set the tone for fun times. Bluetooth Multi Connection - connect and pair two mobile devices. Sound Tower app - control lights sound effects EQ settings and more.