Product Features Color red bulbs / green wire. Number of bulbs on string 150. Bulb size mini. Spacing between each bulb 4 inches. Lighted length 49.2 feet. Total length 49.8 feet. 4 inch lead cord 4 inch tail cord. Additional product features These lights are made to commercial specifications. Lights 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. Wire gauge 20. Contains end-to-end connectors which allows you to connect up to 6 sets together. UL listed for indoor or outdoor use. Comes with replacement bulbs, flasher bulbs and spare fuses. 120 volts, 60 hertz, .51 amps, 61.2 watts.