OptiCore LED Christmas Lights from Wintergreen Lighting are the most beautiful, and most indestructible, Christmas lights you鈥檒l ever own. Made of polycarbonate, which is up to 200 times stronger than glass, these lights can withstand almost anything. They also feature a reflective core  for superior optics. You鈥檒l get rich, amazing color and a bulb that鈥檚 virtually unbreakable. Plus these lights are so energy efficient you can connect multiple light sets together end to end. So say goodbye to replacing your Christmas lights every year, and say hello to the most advanced Christmas lights available: OptiCore.
 
This light set includes 25 blue and 25 cool white heavy duty OptiCore C7 Christmas light bulbs, and one 50-foot commercial grade green stringer with sockets spaced 12 inches apart. To assemble, simply twist the bulbs into the sockets.
 
OptiCore Christmas light bulbs are virtually unbreakable: made of polycarbonate, which is up to 200 times stronger than glass.
 
OptiCore bulbs feature a special reflective core  that produces beautiful color
 
Diamond faceted bulb surface reflects a spectacular light and color halo
 
Nickel plates bases prevent corrosion for improved performance
 
Energy efficient: connect up to 10 light sets together end to end from a single power outlet
 
Commercial grade 18 gauge stringer is tough enough for virtually any outdoor conditions
 
Sockets feature weep holes for trouble-damp weather performance
 
Rated for indoor or outdoor use