Simply push the button then you can see the striking green beam of light shoot forth It will be used to point at any desired targets on projection screens, video monitors, and presentation graphics Also can be used for forensics, illumination, indicating, alignment, sky pointing (astronomy) Output Type :Fixed focus, continuous output and working time of over 5,000 hours Best choice for teachers, professors, doctors, Presentation, Tutorial, and Office Meeting and so on. Clearly visible in the dark. Specification: Color: green Power : 2 x AAA Batteries (NOT INCLUDED)
These are not toys and can cause serious injury. To be used responsibly and never to be pointed directly to anyone, or any object in the sky that is not a star.