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 company, stage, families and KTV rooms, enjoy singing and have fun with it.Specifications:Color: Black/White (optional)Input Voltage: DC 5VItem Size: 14 * 14.6 * 4.5cm / 5.51 * 5.75 * 1.77inItem Weight: 298g / 10.51ozPackage Size: 19 * 19 * 8.5cm / 7.48 * 7.48 * 3.35inPackage Weight: 580g / 20.45ozPackage List:1 * Sound Mixer1 * USB Cable1 * Power Cable1 * Power Adapter1 set of audio cable1 set of video cable