BOOM 3 offers a powerful sonic blast despite its small size. It offers clear and balanced sounds loyal to the music you love, regardless of volume level, thanks to Ultimate Ears' proprietary audio processing. It is designed to withstand life's ups and downs. It has passed over 25 rigorous durability tests, including thousands of button presses, hundreds of tumbles, several drop tests, and more. So go ahead and party, friend. BOOM 3 has you covered from rooftop rage to mountainside shredding. BOOM 3 is powered by the same battery technology as some of the most coveted electric vehicles. It can keep playing music for 15 hours on a single charge. BOOM 3 was designed to be submerged and is entirely waterproof. It has an incredible IP67 water and dustproof rating and can be completely submerged in water for up to 30 minutes.