Princeton Tec Switch LED Task Light W Fast Helmet Rail Mount.  Item is in very good condition. New batteries installed. The white led works good, I could not figure out how to program the other colors. It is possible the other mode is IR and can't be seen without night vision. See pictures and ask any questions before purchasing or bidding, I get my items from many sources such as auctions, purchased from individual US Soldiers, storage liens, garage/yard sales etc. I cannot guarantee a smoke or pet free environment.  See my other items for a wide variety of gifts, Militaria, collectables, diecast, plastic models, clothing, shoes and more. I do not give partial refunds, items will need to be returned in the condition they were shipped in for refund.  sprm bkshelf tote in small ziplock