JBL - Xtreme 4 Portable Bluetooth Speaker with up to 24 hours of battery life - Black: Next level massive JBL Pro SoundTwo woofers, two powerful drivers and dual pumping JBL Bass Radiators effortlessly deliver dynamic, immersive sound with deeper bass and plenty of detail. You'll get lost in the music wherever you are.Up to 24 hours of playtime plus 6 hours with Playtime BoostYour lis