JBL Boombox speaker - designed to be the most powerful portable speaker ever. You get incredible sound on par with explosive bass. Enjoy the sound of music 24 hours a day. Imagine that you are listening to your favorite music all day long on a single charge. Use the massive 20,000 mAh battery and dual output to charge your external device anytime and stay tuned in to your music. The JBL Boombox has an IPX7 waterproof case, so it will withstand any weather and even the most ambitious pool parties. Switch between Home and Outdoor modes to get the best sound for your party location. Plus, should the need arise to boost the power of your music, more than 100 JBL Connect + speakers can be connected at the push of a button over Bluetooth range.