BRAVEN BRV-X Portable Wireless Bluetooth Speaker [12 Hour Playtime][Waterproof] Built-In 5200 mAh Power Bank Charger - Gray The ultra-rugged BRV-X rocks the outdoors with an IPX7 waterproof exterior and shockproof rubber exterior Built-in, noise-cancelling microphone allows for easy hands-free phone calls Built-in 5200 mAh portable power bank quickly charges smartphones, MP3 players, and other USB devices Rubber over molding combined with high-impact plastic provide shockproof durability The BRV-X is protected from rain and splashing for outdoor enjoyment. Rain, sleet, snow; it's still a go