Description Streamlight?s new high flux LED light with Proprietary Micro Optical Systems has ?Auto Battery-Booster? electronics to provide a super-bright beam. Super-bright 1/2 watt, 30,000 hour high flux LED delivers up to 24 lumens output for up to 7.5 hrs runtime 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; corrosion and water proof construction Shock-proof; drop test verified above the industry standard of six feet Type II MIL-SPEC abrasion and corrosion-resistant anodized aircraft aluminum Unbreakable pocket clip Includes (2) ?AAA? alkaline batteries and holster