BRAVEN BRV-XXL Large Portable Wireless Bluetooth Speaker [Waterproof][Outdoor] Built-In 15,600mAh Power Bank USB Charger - Black / Titanium Built for any weather condition, the rugged design is completely Water Resistant, Dirtproof, & Sandproof. 33ft (10m) Wireless Range with Advanced Bluetooth Technology allows for clear crisp sound anywhere you go. Even connect wired through the 3.5mm stereo input AUX port. This massive speaker is built with 4 HD Audio Drivers, 1 Subwoofer, and 14 hours of uninterrupted playtime to ensure for rich full sound all night long. Portable and convenient, XXL features built-in 15,600mAh portable charging capabilities for any smartphone, tablet, or USB enabled devices while you're miles away from a plug. Carrying strap with bottle opener included. Take your party to the next level and boost your voice with the 3.5 microphone input to ensure that your voice is heard.