Ultimate Ears Boom 3 Portable Waterproof Bluetooth Speaker - Storm Ultimate Sound: BOOM 3 delivers loud and immersive 360-degree sound with deep and accurate bass, all carefully balanced so you can hear every note. Powered for Adventure: Rechargeable battery stays powered and pumping tunes for 15 hours. Add the POWER UP charging dock (sold separately) to charge Ultimate Ears BOOM 3 wirelessly so it’s always ready to go on your next musical adventure. Super-Portable and Durable: Waterproof + Floats and Virtually Indestructible. BOOM 3 can be totally submerged in up to 1 meter of water for up to 30 minutes, passing seriously tough durability tests to handle life’s spills and thrills. All-New Magic Button: Play, Pause, Skip and control any streaming music directly on the Bluetooth speaker with one touch of a button. PartyUp: Use the Ultimate Ears app to pair 2, 3, 4…and over 150 BOOM and MEGABOOM speakers together for the ultimate sound experience. Works with any generation of BOOM and MEGABOOM speakers.