DJ PBX PBX4000BAT Channel PA System 15-Inch 3000 Watt Max Power Speaker with Built-In Bluetooth & Battery FM Radio/EQ/LCD/MP3/USB/SD 15" 2 Way Bass Reflex Speaker, 3000 Watts Max P.M.P.O. 4" Interleaved Sandwich Voice Coil, 1" Dome Driver, 40 Oz Magnet, Speaker RMS 150W Built-In Power Amplifier, Power Amplifier 150W, Connection Option 1/4" Stereo Jack RCA Jack Built-In Battery 12V MP3 Player, FM Radio USB/SD Card Input, Microphone inputs, Graphic EQ Wireless Remote Control, Pair Wireless Microphones