The Smith & Wesson M&P Tactical Flashlight is a 4.5 Volt XRE-Q3 CREE HD flashlight. Its dimensions are 5.25” length X 1.25” diameter and include an integrated pocket clip. This dual mode flashlight provides 250 Lumens on high and 30 lumen on in low power saving mode. It has a battery run time of 3 hours on high beam mode and up to 189 hours on low beam. The beam distance on high is up to 627 feet and 95.2 feet on low. Fits all standard weapon mounts.