RDH Multipurpose Green Laser Light Pen |Laser Pen for Kids |Green Laser Pointer Pen for Presentation with Adjustable Cap to Change Project Design

My father uses it while giving lectures and it lasts very long hours, many days. It is really bright and works at long distances. The best thing is my brother uses it for fun purposes and he loves it.

The beam is not visible in even a little bit of light, and the batteries do not last for even 20mins of use

Changing pattern in the laser light is veey beautiful look like these are the stars looks very awesome. Quality wise very good packing box is also very nice

Really helps in doing the science experiments , as its laser range is high .Easy to use as well as carry . Battery used in it is good. So thanks amazon for providing such things.