Streamlight 68821 4AA Propolymax Flashlight, Black - 300 Lumens 300 lumens of light The latest in C4 LED technology and three different user selectable programs Features a sealed tailcap switch for user selectable momentary or constant on operation Mechanical battery polarity protection and a body constructed of a engineering polymer resin that is virtually indestructible, shock resistant, non-conductive and light weight C4 LED technology, impervious to shock with a 50,000 hour lifetime