JBL combines wireless audio streaming and portability with the Charge 4 Portable Bluetooth Speaker. This speaker features a proprietary developed driver and two JBL bass radiators that intensify sound with strong deep bass. Its high-capacity 7800mAh rechargeable lithium-ion battery provides up to 20 hours of playtime. This speaker carries a convenient USB Type-C charge out to quickly power your mobile devices, such as your smartphone or tablet. Features: Wireless Bluetooth Streaming, Pair up to 2 Mobile Devices at Once, JBL Bass Radiator, Rechargeable Lithium-Ion Battery, USB Type-C Charging Port, Last up to 20 Hours on a Full Charge, Durable Fabric Material & Rubber Housing, IPX7 Waterproof, Pair with Other JBL Connect+.