The JBL 5961813 PartyBox 320 is a portable party speaker. It features powerful JBL Pro Sound and big thumping bass fill a wide soundstage and get the crowd moving while their eyes are delighted by an adaptive lightshow of swirling starry lights cool light trails and amazing strobe effects synced to your beat. Use the mic and guitar inputs to show off your stage presence. You can steer the party s flow throughout the night with fun interactive party effects. The solid telescopic handle and wide sturdy wheels mean you can roll the it just about anywhere and once you re there the splash-proof construction means a little rain won t ruin the fun. Best of all it delivers up to 18 hours of playtime and if the good times are still rolling just swap out the replaceable battery and keep going. For an even bigger party it s easy to connect or use the JBL PartyBox app to connect multiple JBL Auracast-enabled speakers wirelessly.