big JBL Pro Sound 18 hours battery life IPX4 splashproof protection Huge sound, dazzling lights and unbelievable power set this speaker apart from the crowd. The JBL PartyBox 310 packs a full party into a transportable, splashproof sound machine like no other. Turn up your favorite playlists anywhere, from get-togethers at home to dance parties on the beach. Bring big party vibes with 240 watts of JBL Pro Sound and a synced light show that grooves to the beat. Plug in and keep the fun going all night or wheel over to the campfire and take advantage of its impressive 18-hour battery life. Start a party with the JBL PartyBox 310.Powerful JBL Pro Sound Around the block or across the beach, make your party heard with 240 watts of big JBL Pro Sound. Sing, rap, strumthen turn up the bass and watch the dance floor come alive.Light up the nightMesmerize your crowd with a dazzling, dynamic light show that dances to the beat. With subtle pulsing and powerful strobing effects, there's a settin