About This Product Brighten up your holiday display or your next party with some help from this set of string lights! Crafted from glass and wire, this piece includes 20 small lights perfect for decorating a Christmas tree, hanging around your mantle, or bringing some illumination to your reading nook. Plus, it includes 20 replacement bulbs. Best of all, this set is battery operated, so no need to search for an electrical outlet to brighten up your space. Features Number of bulbs on string: 20 UL listed for indoor use only Straight line construction This set has 20 push-in type bulbs. Bulbs do not twist. Standard batteries last approximately 72 hours before they need to be replaced Comes with a replacement bulb On / off switch located on back of battery pack Cannot connect multiple sets together Timer on battery pack: No Lighted string length: 9.8'