Streamlight Sidewinder Stalk, Military Helmet Light System w/ Flexible Stalk, 76 Lumens, 12-200 Candela, 5.6 Hours of Run Time on High, 95 Hours of Run Time on Low, 28 Meter Beam Distance, Accepts CR123A & AA Batteries, Coyote 14307 Designed to minimize the number of illuminators an operator must carry" the low-profile Sidewinder Stalk provides ultimate maneuverability" multiple mounting options" and a flexible stalk to aim the beam. Multi-fuel capability allows it to accept more than one battery type. Features visible white" multi-colored" and IR LEDs. In addition" a separate Identification Friend or Foe (IFF) switch lets you use both the main light and IFF when needed.