Drivers: 1.5 in. tweeter + 15 in. subwoofer; Woofer with multicolored LED flashing lights; Peak music power output: 4,000 watts; Inputs: 1/4 in. karaoke microphone and 3.5 mm auxiliary; 4 control levels including master volume, treble, bass, and echo; Streams music from Bluetooth(R) devices; Built-in MP3 player supports USB and SD(TM) memory cards; FM radio tuner; LED status display; Easy-to-use telescoping handle and trolley wheels; Powered by built-in rechargeable battery (7.4-volt/2.2 amp) or AC power adapter; Includes remote, wired microphone, aux cable, AC power adapter, and instruction manual;