Dherik Tradworld Green Laser Light Pen, Presentation Disco Pointer Pen Beam with Adjustable Antenna Cap to Change Project Design for Presentation  (400 nm, green)

5 in 1 Retractable Laser Pointer is great for presentations, lectures, coaches, engineers, inspectors, designers. Fantastic as a star-pointer - easily visible at night time, the unusual bright color makes it much more noticeable. Visible Beam You can focus the beam to the smallest. You can see beautiful and strong green laser beam at day time. It has safety lock function with keys, you can turn the key to the red point to lock it. Easily to use, only need to push the button then you can see striking green beam of light shoot forth. In addition, it is lightweight and handy, easy to carry and suitable for put in your pocket or handbags. Best choice for teachers, professors, doctors, and so on.