The color of 800mw laser pointer has different functions

Class 2 lasers emit visible light with a maximum output power limit of 1 mW laser designator. People who received type 2 laser eye statements were protected from damage caused by their natural aversion response - an unexpected reaction that causes a person to blink and turn their head while avoiding contact with the eyes. Class 3A lasers are capable of emitting visible and invisible laser radiation with a maximum output power of 5mW. For accidental exposure, this type of laser does not immediately harm the eye, as the laser responds to normal human aversion to light. However, deliberately looking at the laser beam or observing the laser with an optical instrument can be dangerous and should always be avoided. Many building aligned lasers fall into class 3.