This product features a JBL Charge 4 portable Bluetooth speaker with full-spectrum, powerful sound and a built-in power bank to charge your devices. It also features a proprietary-developed driver and two JBL bass radiators that intensify sound with strong deep bass. Up to 20 hours of playtime & speaker carries a convenient USB charge out to quickly charge your devices. 8.66" x 3.74" x 3.66"