Portable Bluetooth(R) audio system; LED display; USB/microSD(TM) Card/3.5mm aux input; Karaoke function with 1 microphone input; FM radio; Driver: 5.25"; Imp: 2ohm ; Freq resp: 90Hz-20kHz; Built-in rechargeable 1,200mAh lithium battery; Power output: 9W; Complete portability; Includes microphone & micro USB cable;