4 inch plasma ball light ( factory sealed ) Passed GS ,CE,LVD,ROHScerificate ... , 5 inch, 6 inch,8 inch 4 inch plasma ball lightPassed GS ,CE,LVD,ROHS cerificateProduct size :4 inch , ... sound of your voice or your favorite song. 4" Ball.Light up your room or just decorate your computer ... enough of the excitement of the dancing currents of the plasma ball! A 4" ball sits atop a black base. Colorful ...