This set of one 100lt professional series light sets with white wire make for a beautiful Christmas display.The beautiful multi colored mini bulbs on white wire create an elegant effect. Features include longer length, socket lock and if one bulb goes out, the others stay lit. You can even connect up to four sets together! Light up your home throughout the holiday season and be the envy of your neighbors. Each strand is 21 ft long, including a 12" lead cord, 2.5" spacing between bulbs, and a 3" end cord. Perfcet for indoor/outdoor, UL listed.