Features: The sound mixer can be controlled by linear audio input and can be connected to 2 sets of microphones. Dual Power Supply Modes -- powered by 5V power bank(not included) or power adapter (universal voltage 110-220V). Features separate reverberation effect and high/bass adjustment. Support functions of U-disk playing MP3 and recording, audio broadcasting, BT playing. With control panel, including knobs of previous music, pause, function switch, next music. Stable, lightweight, small and elegant, suitable for stage, families and KTV rooms, enjoy singing and have fun with it. Specifications: Brand: Muslady Color: Black/White (optional) Input Voltage: DC 5V Item Size: 14 * 14.6 * 4.5cm / 5.51 * 5.75 * 1.77in Item Weight: 298g / 10.51oz Package Size: 19 * 19 * 8.5cm / 7.48 * 7.48 * 3.35in Package Weight: 600g / 21.16oz Package List: 1 * Sound Mixer 1 * USB Cable 1 * Power Cable 1 * Power Adapter 1 set of audio cable 1 set of video cable