Play and Charge Endlessly Introducing 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 7800mAh 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 Streaming Wirelessly connect up to 2 smartphones or tablets to the speaker and take turns enjoying powerful sound. 20 Hours of Playtime Built-in rechargeable Li-ion 7800mAH battery supports up to 20 hours of playtime and charges your device via USB port. IPX7 Waterproof Take Charge 4 to the beach or the pool without worrying about spills or even submersion in water. JBL Connect+ Amplify your listening experience to epic levels and rock the party perfectly by wirelessly connecting more than 100 JBL Connect+ enabled speakers. Durable Fabric And Rugged Material The durable fabric material and rugged rubber housing allows your speaker to outlast all of your adventures. JBL Bass Radiator Dual passive radiators deliver powerful, ear catching JBL sound that resonates loud and clear. *PLEASE NOTE* The JBL Charge 4 does NOT include a USB wall adapter.