Built-in bass port Full-range JBL sound Built for durability Features Full-range JBL sound High-capacity, 6000mAh Li-ion rechargeable battery Bluetooth technology LED indicator Features jbl.com LED indicator Built-in bass port Versatile, portable design Bluetooth technology Built for durability Recharges your external devices Recharges your external devices Versatile, portable design High-capacity, 6000mAh Li-ion rechargeable battery