This set of one 100lt professional series light sets with white wire make for a beautiful Christmas display. With 100 blue mini bulbs, the setsare elegant, longer in length, and if one bulb goes out, the others stay lit. It's a wonderful decoration whether for the holidays or even for the July 4th celebration. Connect up to four sets together! Each strand is 21 ft of white wire, including a 12" lead cord, 2.5" spacing between bulbs, and a 3" end cord. Perfect for indoor/outdoor, UL listed.