Super Bright - Recoil-proof LED generates 1200 lumens of blinding white light and continues producing tactical-level light for 4 hours 200 meters beam. Durable - Made of aircraft-grade aluminum alloy with black anodized matte finish, which makes it durable and shockproof. Assembled with waterproof o-rings and anti-abrasive coating lens so the flashlight can be used on a rainy day. 2 Switch Choices - Comes with a constant on button switch and a momentary on pressure switch (2 modes) for different tactical needs. Users will enjoy the dual-switch tail cap which allows for easy single-handed operation. mLok Rail Ring Mount - Patented Mlok flashlight mount especially designed for the FL17 weapon light, easy to install and deadly stable. Get All You Need Inside One Box - 1 x FL17 Flashlight, 1 x mLok Flashlight Mount Kit, 1 x Pressure Switch and 1 x User Manual