This is a very bright light when on "high" mode, will last a longer time on "low" mode. The price is very good when you compare the performance to Sure-Fire or other Tac lights. The Lithium batteries are worth $10 of the price by themselves, plus you can always use AA batteries if you are in a pinch - no need to find CR123's! Buy it.
Pros: Bright, two modes, Lithium batteries included
Cons: none that I have found
This review was written in the old system and had content requirements that are different than reviews written today.