BRAVEN BRV-1M Portable Wireless Bluetooth Speaker [12 Hours][Waterproof] Built-in 2200 mAh Power Bank Charger - Red/Black Enjoy 12 hours of continual playtime and hands-free calling with built-in speakerphone and noise-canceling mic. Crush-resistant frame and IPX7 certified waterproof housing constructed for adventure. Built-in emergency smartphone charging via 2200mAh internal power bank with 1A output.