Holds a large battery for extended standby time. Installation simple on weapons. A "MUST HAVE" for your primary defense weapon. I was going to buy another handgun for my small collection. But instead bought TWO of these for the same money and am happy I did. My confidence level is very high now.
Pros: Teaches you to be a better shooter, may save your family's life one day.
This review was written in the old system and had content requirements that are different than reviews written today.