Pump up the party with the Ultimate Ears BOOM 4 wireless Bluetooth speaker. This waterproof speaker offers one-touch music control for smooth navigation. It delivers balanced 360-degree sound with deep bass for an immersive listening experience wherever you go. With four EQ modes or the option to customize your sound, you can enjoy every beat exactly how you like it. | Ultimate Ears BOOM 4 Waterproof Bluetooth Wireless Speaker - Active Black