LED lights use 90% less energy. These durable, non-glass bulbs are cool to the touch and are equipped with Lamp Lock feature which makes them replaceable, interchangeable and keeps them from falling out. If one bulb burns out, the rest will stay lit. Details:Warm White bulbsGreen wireNumber of bulbs on string: 100Bulb size: wide-angleSpacing between each bulb: 4”Lighted length 33 feetTotal length: 33.7 feet4" lead cord4" tail cord Comes with replacement bulbs and spare fusesEnd-to-end connectors allow you to connect multiple sets together (not to exceed 210 watts)UL listed for indoor/outdoor use120 volts 60 hertz 0.04 amps 4.8 wattsWire gauge: 22Material(s): plastic bulbs/wire