Portable Bluetooth speaker with 360-degree sound The MEGABOOM 4 portable waterproof Bluetooth speaker features a bigger size and larger woofer for powerful 360-degree sound and thundering bass with great balance and clarity. 20 hours of BOOM This waterproof portable speaker has a massive 20-hour battery life and the latest cell technology, so you can boom all day long.* Virtually indestructible waterproof speaker A floating Bluetooth speaker that's rated IP67 waterproof and guaranteed to make a splash at your next pool party. Pair several MEGABOOM 4 speakers using the Ultimate Ears | BOOM app Use PartyUp on the Ultimate Ears BOOM app to pair several BOOM, MEGABOOM, EVERBOOM, EPICBOOM, and HYPERBOOM portable Bluetooth speakers, creating the ultimate surround sound experience. Drop-p.
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