Visible class II laser pointer

Class II: low visible laser power (power 0.4MW -1mW), eye-closing reaction time 0.25 seconds. Use this time to calculate the exposure value. You cannot exceed the error limit. A green laser pointer acts as a microphone. Lasers less than 1 mW usually cause dizziness, but do not. Closing your eyes to protect them is not entirely safe. Be careful going directly into the beam. Others are lasers to avoid protection level II observations. Typical applications include classroom demonstrations, 5mW laser designators, sights, rangefinders, etc. However, laser Pointers have little use beyond real Pointers in the broad entertainment industry, and in many places proximity to people with Pointers is banned as a potential hazard. In rare cases, laser gloves (sometimes used as Pointers) worn by professional dancers during stage performances can be seen. Unlike Pointers, they typically produce a low-power, highly divergent beam to keep the eye safe. Once or twice, these clues have been used by magicians as props in magic shows.