In reply to FiregirlPaula, the pulse mode in a laser does two things, it makes the battery last longer than continuous ON, and can help you distinguish your aim point from others in a crowded confine. With a tactical light (an under barrel type "flashlight"), the pulse mode is also disorienting to the person it is aimed at, but a laser is not
Pros: THE BEST switch
Cons: Just a tad larger that others
This review was written in the old system and had content requirements that are different than reviews written today.