SuperSonic IQsound Wireless Bluetooth Portable DJ Speaker System, 12-Inch High Efficiency Woofer, LED and Disco Lights 12-inch high efficient woofer and Piezo tweeter This speaker delivers durability, flexibility, and outstanding audio performance with exceptional range. The speaker system is perfect for nightclubs, home entertainment, seminars, or any other venues and events. Built-in Bluetooth receiver allows you to wirelessly connect to your iPad, iPhone, iPod, smartphone and more. USB/SD and AUX inputs allow you to connect your non-Bluetooth external audio devices.