While being supremely compact, this tactical flashlight with Led technology is sturdy and dependable enough to withstand the recoil of the most powerful firearms. Fully made of metal and perfectly waterproof, it also comes with a Quick Release mounting system that will instantly fit any Weaver or Picatinny rail.Specifications:WaterproofLed Type Cree-xpg-2Power Output 360 Lumens - 3wBattery Type Cr2 Lithium (Included)Length 2.47a ^2-62.2mmBezel Diameter 1.55a ^2 - 39.3mmBody Width 1.57a ^2 - 39.8mmQuick Release MountSuitable For Weaver/picatinny RailFlashing Function