ULTIMATE SOUND: Super portable wireless Bluetooth speaker with 360° bold, immersive, crystal clear sound and up to 15 hours of battery on a single charge. It brings your music to life wherever you take it. POWERED FOR ADVENTURE: Rechargeable battery stays powered and pumping tunes for 15 hours on a single charge. 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, WATERPROOF & VIRTUALLY INDESTRUCTIBLE: Ultimate Ears BOOM 3 is seriously waterproof and floats. BOOM 3 was born to get wet and is completely waterproof with a IP67 water and dustproof rating, which means it and can be totally submerged in water up to 1m for 30 minutes. No matter how wild things get, your music will always be on point.