The small width of the beam and low power of typical laser 10mw make the beam itself invisible in a reasonably clean atmosphere, showing a single point of beam light form. This is a commonly used product for meetings and conferences, let you speak out freely. 10mw laser pointer reflects the individual unique aesthetic taste, particularly suitable to create a romantic atmosphere, and brighter colors would make an object more visible in the sky, it comes down to all other uses such as pinpointing something on the large screen or on the blackboard.