SureFire illumination tools are the finest in the world - compact, rugged, powerful, reliable, and efficient. Engineered for maximum performance and manufactured with precision, they produce optimal beams featuring impressive light output with no defects or Shadows. That's why people whose lives depend on having the right amount of light when they need it - such as military personnel, emergency responders, law enforcement officers, and outdoors professionals and adventurers - rely on SureFire. - Scout light, 3V, M75 thumb screw mount, 500 lumens, tan, Z68 click on/off tailcap