Made to be the most powerful, Portable Subwoofer, we deliver monstrous sound along with the hardest hitting bass. Enjoy music for 24 hours without missing a beat. Imagine playing with your favorite beats from sunrise to sunrise on a single charge. Use the massive 20,000mAh battery and dual charge out to charge your external devices anytime and keep music rocking. Rugged enough to handle your wildest tailgate party, the Portable Subwoofer waterproof, which withstand any weather and even the most epic pool parties.