Kick start your party with JBL signature sound and a dazzling LED light show all in 360 degrees. Our bold, IPX7 waterproof design shines bright and will keep the tunes flowing for up to 12 hours on a single charge. Tap the JBL Connect App to change the sound-responsive colors and patterns and connect with other JBL PartyBoost compatible speakers to make your party epic.Make a Splash with IPX7 Waterproof DesignBring your speakers anywhere. Pool party? Perfect. Sudden cloudburst? Covered. Bash on the beach? Pulse 4 is IPX7 waterproof up to three-feet deep for fearless outdoor entertainmentJBL PartyBoostPartyBoost allows you to pair two JBL PartyBoost-compatible speakers together for stereo sound or link multiple JBL PartyBoost-compatible speakers to truly pump up your partyApp ControlDownload the JBL Connect App to rule your party with ease. And visualize your music with a variety of light show themes or even customize your very own. Ready to tune out? Turn your speaker into an ambient light show whether your music is on or off.