This season deck your halls and boughs of holly with purple mini Christmas lights. The 100 incandescent light bulbs are spaced 2.5 inches apart on green wire making them the ideal lights to wrap wreaths, metal and wooden arches, and nestle in garlands or centerpieces. UL listed for indoor and outdoor use, the set averages 3,000 hours of trouble-free lighting. Up to 3 sets of the 21-foot strings can be connected end-to-end. Your house will be singing holiday tunes with these distinctive and colorful lights.