Style B is need plug wire to work,style A can be charging,used anywhere.have battery inside.Music box can sing,also can charging,Style A and B cant sing music

You can turn off the music. The button on the left is the rotation button. When you press it for the first time, the projection will rotate. If you press the button again, the music begin playback, if you need to turn off the music, you must switch the music continue button. After the music is played, there are several songs available,The button on the right is used to control the color change and switch.If you need to turn off the rotation, long press it

Star Projector Light Colorful Music LED Night Lights For Kids USB Charging/Rotatable/Sing Project lamp Bedroom Party MOONSHADOW