SureFire M300 Mini Scout LED Weapon Light Ergonomic tactical switching: click-on/off tail cap and pressure-activated tape switch (both included) Solid-state, recoil-proof LED generates 200 lumens of blinding white light and continues producing tactical-level light for 1.3 hours Total Internal Reflection (TIR) lens creates versatile beam with for medium-range applications and sufficient surround light for peripheral vision Hard-anodized aerospace aluminum, optically coated tempered window, and O-ring seals make for a rugged Weapon Light Powered by one 123A lithium battery (included) with 10-year shelf life