Green Laser Kaleidoscopes are Just what you hope a laser pointer pen can be, Green laser Kaleidoscope just meets all your expectation for the fantastic beam effects. They can also work as the ordinary laser pointers that mostly applied for stargazing, presentation, etc. But they're far more than that. They functions like a delicate handheld laser light show equipments, because it's equipped with diffraction gratings integrated in thelaser heads. Thus the magic and three-dimensional green laser beam forms various graphics or shapes, such as firefly, stars, polytope, 3-dimensional 'animated" graphs, etc. You only need to adjust the laser head. Picture talks a lot.