Lighted Length: 20 ft. (6 m). Total Length: 21.5 ft. (6.5 m). Indoor/Outdoor. String to string. Steady burning or 2-way flashing. UL listed. Perfect for decorating trees, shrubs, bushes, rooflines and more. If one or more bulbs burns out, others stay lighted. For indoor and outdoor use. 120v 60 Hz AC. Made in China.