That is our 5MW green laser point pen (2 included). It is a 532NM green laser point which is made of aluminum alloy, durable enough for a long time using. There is a cap at the bottom of this pen which can emit kaleidoscopic green laser dots. Also, you can adjust the cap to let the light beam to be a small dot. You can use it to point at any desired targets, project screens, lectures, or video monitors and so on. And this item is powerful with only two AAA batteries which is included in package. As one of customers said that the laser beam on this 5MW green laser point pen is very tight and can be seen as far as the eye can see. Such a funny item has a competitive price! Why not choose it right now! Come on! This kaleidoscopic green laser point pen will be your best choice.