Built-in 4 songs the board comes with a score so that users can play music anytime anywhere. Colorful LED lights colorful and dazzling. The potentiometer can adjust the volume of the amplifier. Manufacturered by V BESTLIFE. The circuit comes with a power amplifier drive circuit and the sound is loud enough. Made of ABS material the product is sturdy and durable. USB powered convenient and fast. In the music mode the button can control the previous and next songs. In the electronic organ mode seven buttons can be played.