Ion Audio Tailgater Active BLUE Heavy-Duty Wireless Sound System, Blue Streams music wirelessly from any Bluetooth music player up to 100 feet away Built-in battery provides up to 50 hours of continuous use on a single charge 2 power outlets for distributing AC power to lights, tools, and more Built-in digital AM/FM radio with 6 preset buttons and durable rubber antenna Powerful 50-Watt speaker system provides room-filling sound and full bass