Bethlehem Lighting Indoor/Outdoor Holiday Christmas Light Set with 50 Miniature Bulbs, Clear with Green Wire Indoor/outdoor holiday light set with green wire and 50 miniature bulbs Locked-in, twist-proof bulbs prevent misaligned wires and light failure while decorating 200mA lamps ensure rich color and intensity for 3 years or 3,000 hours; stacking plugs String remains lit even with 1 or more non-functioning bulb; UL-listed and safety-certified Measures 23 feet long with 5 inches in between each bulb