Description HIGH-POWERED LED PENLIGHT. Streamlight?s new high flux LED light with Proprietary Micro Optical Systems has ?Battery-Booster? electronics to provide a super-bright beam. Proprietary Micro Optical System (MOS), for optimized output and runtime Up to 24 lumens output for up to 7.5 hrs runtime Super-bright 1/2 watt, 30,000 hour high flux LED An internal polymer body liner and shock proof switch housing allow for operation under the most extreme conditions Rubber push button tail cap switch O-ring sealed Unbreakable polycarbonate lens Unbreakable pocket clip Belt Holster included Corrosion and water resistant construction Water resistant per IPX4; in accordance with specification EN 60529:1992 Shock-proof; drop test verified above the industry standard of six feet Type II MIL-SPEC abrasion and corrosion-resistant anodized aircraft aluminum Includes (2) ?AAA? alkaline batteries and holster 1.64 oz. with battery 5.3? long Limited Lifetime Warranty