PRODUCT OVERVIEWIntroducing the JBL Charge 4 portable Bluetooth speaker with full-spectrum, powerful sound, and a built-in power bank for charging your devices. A high-capacity 7500mAh rechargeable Li-ion battery provides up to 20 hours of playtime and the speaker carries a convenient USB charge out to quickly charge your devices so you will never run out of power again. And with a rugged design, IPX7 waterproof rated exterior, together with JBL Connect+ it will elevate your listening to the next levelKEY FEATURESWirelessly connect up to 2 smartphones or tablets to the speaker and take turns enjoying the powerful sound.Built-in rechargeable li-ion 7800mAh battery supports up to 20 hours of playtime and charges your device via USB port.Take charge 4 to the beach or the pool without worrying about spills or even submersion in water.Amplify your listening experience to epic levels and rock the party perfectly by wirelessly connecting more than 100 JBL connect+ enabled speakers.