150 LED Cool white Christmas lights, special feature is if one LED or more than LEDs burns out the rest remain light, 50 feet length and 4 inch spacing, UL certified 22 AWG green wire and plug in, end to end can be connect up 10 sets, AC 120 volts,19.8 watts, This set of LED string lights has a full-wave rectifier structure, and can not be connected to the incandescent string lights, for indoor outdoor Christmas trees, Festival, garden, home, patio.