Everyone needs a good tactical light. This one has a long lasting (like forever) LED bulb that puts out 120 lumens (a whole lot) of light. This works on two Lithium CR123 Batteries with a shelf life of 10 years. This light will be there when you need it. It is a polymer (heavy plastic) construction. Tactical lights are a must for the armed citizen. Spend a little extra and get an LED. We have found this one to be a great value. We are offering it well under retail. Good quality LED lights are not liked the cheap stuff you see everywhere. These are good lights. This retails for $65, we are offering it closer to our price. C4 LED 2-3X brighter than High Flux LED! 4,800 candela peak beam intensity; 120 Lumens Features Solid State Power Regulation that provides maximum light output throughout battery life Run time up to 3 hours Tailcap push button provides one-handed momentary or constant "on" operation. Rotates for "Safe" position High impact super tough nylon polymer for exceptional durability and a sure grip 5.22" Long; Lightweight, just 4.1 oz. Available in Black and Coyote Tan as a special order. IPX7 rated design; waterproof to 1 meter for 30 minutes Powered by two 3V CR123A lithium batteries (included) Limited lifetime warranty