15 high-efficiency subwoofer; Bluetooth(R) wireless capability; FM radio; Moonlight glow lights; Built-in rechargeable battery; USB input; microSD(TM) Card slot; Microphone input; Built-in handle & wheels for easy transport; Freq resp: 30Hz-20kHz; Sens: 65dB; Imp: 4ohm ; 25W RMS power; Includes stand, remote control, microphone & user manual; Black;