The ball is not glass but transparent plastic, which is probably best for an object to remain on the floor or furniture.
The instructions are simple: by using the remote control, choosing a light color and we can adjust saturation (frank or pastel color). You can stop his choice on a color or adjust the machine to do all the scroll. The choice of colors is quite poor however unlike advertising indications.
After plaything few minutes, the object appears for what it is: a bulky and expensive gadget. Mine is returned in its carton.