Monster Rockin Roller 80 Watts, 80 - Hour Battery, High Performance Portable Indoor - Outdoor Water Resistant Wireless Bluetooth Speaker, Night View LED, - Black 80 Watts of Omni-directional sound for robust sound quality Built-in rechargeable battery lasts up to 75 hours Easy Bluetooth connect feature with audio confirmation Built in LED lights for easy viewing at night Indoor/Outdoor weather resistant operation (not to be submerged under water)