LED lights use 90% less energy. These faceted lights are equipped with a clamp on the base of each bulb so that you can easily attach the lights to trees bushes and more! Details:Pure white faceted bulbsGreen wireNumber of bulbs on string: 50Bulb size: C7 light covers over wide-angle bulbsSpacing between each bulb: 5”Lighted length 16 feetTotal length: 16.7 feet4" lead cord4" tail cordComes with 2 spare bulbs and 1 replacement fuseEnd-to-end connectors allow you to connect multiple sets together (not to exceed 216 watts)UL listed for indoor/outdoor use120 volts 60 hertz .04 amps 4.8 watts