The Bigfoot Portable Large Venue Sound System from Anchor Audio features a 400-watt amplifier that’s strong enough to project sound to extra-large crowds. This fully wireless unit features rechargeable batteries that provide you with six to eight hours of continuous use – no cables required. Five, eight-inch speakers offer crisp, clear sound quality for sports venues, outdoor ceremonies, lecture halls, music productions and more. Plus, a 1.9 GHz wireless frequency eliminates interference. This sound system folds up for easy storage and features two casters for maneuverability. Includes your choice of handheld or belt pack wireless microphones.