Play and Charge endlesslyIntroducing the JBL Charge 4 portable Bluetooth speaker with full-spectrum, powerful sound and a built-in power bank to charge your devices. It features a proprietary developed driver and two JBL bass radiators that intensify sound with strong deep bass. Its high-capacity 7500mAh rechargeable Li-ion battery provides up to 20 hours of playtime. The speaker carries a convenient USB charge out to quickly charge your devices, such as your smartphone, so you will never run out of power again. The Charge 4 features a rugged design, IPX7 waterproof rated exterior and comes in a suite of cool colors. Together with JBL Connect+ it can wirelessly link more than 100 JBL Connect+ enabled speakers to elevate your listening experience.Wireless Bluetooth StreamingWirelessly connect up to 2 smartphones or tablets to the speaker and take turns enjoying powerful sound.20 hours of playtimeBuilt-in rechargeable Li-ion 7500mAH battery supports up to 20 hours of playtime and charges your device via USB port.IPX7 waterproofTake Charge 4 to the beach or the pool without worrying about spills or even submersion in water.