DTOM Ultra-Bright DT110 Pistol LED Strobe Flashlight with Weaver Quick Release, Black Gun Light DT110 Pro-Tactical Elite Firearm Light. Equipped with the Cree XP-G LED and powered by a single CR123 lithium battery. Super bright reflector lens that focuses the beam for maximum long distance lighting while also producing enough light to support the users peripheral vision. The unit is lightweight yet very sturdy being constructed from the highest quality aircraft grade anodized aluminum. Please check our other reviews on DTOM holsters products or on our Dr Mom LED Otoscopes to know how important quality reputation is for our company. We will be here after the sale and will always stand behind our products. Do not be fooled by all the claims of 400 or 500 lumen's with runtimes of 3 or 4 hours. These are simply made up numbers. If you see anything burning beyond 2 hours of continuous run time then the light is not bright enough. If you do have a light running at 400 lumen's your run time is only going to be around 30 minutes per battery. The optimum brightness vs battery life in a tactical flashlight is 2 hours at 250 lumen's. If you are reading something different than this then the company advertising it is simply making up the numbers. Length: 3", Weight: 3 oz.