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 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. The mobile soundbox is ideal for a trip to the swimming pool or to the beach. The wireless speaker box can be connected to up to two devices. It has a durable material and durable rubber housing. Box contents: 1 x JBL Charge 4 music box with USB-C charging cable. Waterproof according to IPX7. Long battery life. 30 Watt frequency range 60 Hz - 20 kHz.