Have you ever tried to pointed out constellations with friends? Both your friends and you try to locate the stars you're looking at. See， there is the moon over there. Now one thing named Laser Pointer (laser range: 5 km)， we have a chance to play with it. We can point out into the place far way from us， pressing the button， and light streches from your hand to infinity.

How to use:
Just push the button， and then you can see striking green beam of light shoot forth. The light can point at any targets， such as photos， blackboard， video monitors， and so on.

Note:
Never point at people and always avoid direct eye contact. Please keep out of reach from children， pets， and so on.