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 Lovteries, Black 14311 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.