Blazing intensity from 5 brilliant white LED’s will show you what you are doing, or where you’re going under any conditions. This is an extremely durable aerospace-grade, anodized aluminum, handheld lighting unit that is shockproof, crushproof and water-resistant. Three position end-cap switch activates high, low and lockout light modes. It uses two 10 year lifespan 123A lithium batteries (included) that drive the emitters with enough punch to throw a flood beam up to 40 meters, with a burn time of up to 85 hours (Low power, 17 hours High). Energy efficient LED life is calculated at 50,000+ hours which oughta hold ya. A fluted body/barrel enhances grip. Think of it as the Colt’s Dragoon of flashlights. 4.75"×.9". 3.49 oz. 31 lumens.