New configuration operates with 4 D-cell batteries. 3-Way (flashing, steady burn, off) L.E.D. lights located in the strongest area of the case for protection. Simple, one piece battery compartment with battery contacts that work with gravity for greater conductivity. Durable protected L.E.D. lighting assembly with break away feature during impact. A case housing, with proven durability, and a neck that is almost unbreakable. Made in the U.S.A. Standard Pack:10. *Parts are not interchangeable with old incandescent light.