Compact, lightweight, lithium-powered personal flashlights Adjustable spot-to-flood focus Machined aircraft aluminum with anodized finish Non-protruding tailcap switch to decrease the chance of accidental activation Momentary push button tailcap, which rotates for locked on One hour of continuous runtime Tail cap momentary push button – rotate for lock on Shock-Proof model available, designed to withstand even the punishing recoil of 3 12 gauge magnum slug. O-ring sealed Runs on two 3 volt CR123A lithium batteries with a storage life of 10 years (included) High-pressure xenon gas-filled bi-pin bulb Pocket clip, adjustable lanyard