Color: Blue bulbs / green wire. Number of bulbs on string: 50. Bulb size: Mini. Spacing between each bulb: 4". Lighted length: 16.8'. Total length: 17.5'. 4.5" Lead cord. 4" Tail cord. Super bright bulbs. UL listed for indoor or outdoor use. If one bulb burns out the rest will stay lit. Lights are equipped with lamp lock feature which makes them replaceable interchangeable and keeps them from falling out. Contains end-to-end connectors which allows you to connect multiple sets together (not to exceed 210 watts). Comes with replacement bulbs spare fuses and blinker bulbs. Wire gauge: 22. 120 Volts, 60 hertz, 0.17 amps, 20.4 watts.