Ultimate Ears

Ultimate Sound: The BOOM 4 portable waterproof Bluetooth speaker delivers rich, 360-degree sound and deep, accurate bass, all carefully balanced so you can hear every notePowered for Adventure: This waterproof portable speaker has a rechargeable battery that stays powered, pumping tunes for 15 hours..

Ultimate Sound: The BOOM 4 portable waterproof Bluetooth speaker delivers rich, 360-degree sound and deep, accurate bass, all carefully balanced so you can hear every notePowered for Adventure: This waterproof portable speaker has a rechargeable battery that stays powered, pumping tunes for 15 hours..

Ultimate Sound: The BOOM 4 portable waterproof Bluetooth speaker delivers rich, 360-degree sound and deep, accurate bass, all carefully balanced so you can hear every notePowered for Adventure: This waterproof portable speaker has a rechargeable battery that stays powered, pumping tunes for 15 hours..