The Ailipu SP-3211D is a 12-inch, high-power (up to 50,000W P.M.P.O) rechargeable portable Public Address (PA) system, designed for indoor/outdoor events, karaoke, and public speaking. It features a trolley suitcase design, dual wireless microphones, RGB LED lights, Bluetooth, USB/TF/AUX connectivity, and long-lasting battery life.