Bethlehem Lighting GKI LED Ultra Thin Wire Battery Operated Blue 18-Christmas Light Set Comes with an 18-inch lead and 4-inch spacing. Green cord. 18 revolutionary, super bright LED lights embedded in a flexible wire for 360 visibility. Great for crafting and decorating everywhere! ENERGY STAR-certified LED lights! ENERGY STAR qualified lighting provides brilliant light but uses 75% less energy, 75% less heat and last up to 10 times longer! These LED light strings have a patented rectifier built in--eliminates unwanted tracing and ensures delivery of the truest colors possible. UL approved for indoor applications.