JBL Boombox, Waterproof Portable Bluetooth Speaker with 24 hours of Playtime - Black, only $274.95,free shippingMade to be the most powerful, portable Bluetooth speaker, JBL boom box delivers monstrous sound along with the hardest hitting bassEnjoy music for 24 hours without missing a beat. Battery Charging time (hours)- 6.5Use the massive 20, 000mAh battery and dual charge out to charge your external devices anytime and keep music rockingRugged enough to handle your wildest tailgate party, The JBL boom box is IPX7 waterproof, which withstand any weather and Even the most epic pool partiesIncorporated four active transducers and two JBL bass radiators, JBL boom box delivers monstrous sound along with hardest hitting bass that you will not only hear but also see