noma c9 led christmas lights | 25 blue bulbs | 16.8 ft. string light | ul certified | indoor & outdoor noma holiday decorating just became easy with our stunning c9 led diamond cut faceted string lights. perfect for holiday celebrations, our christmas lights are guaranteed to bring a warm inviting glow to any space. multi-purpose and weather resistant our lights are suitable for both indoors & outdoors and look great on your christmas tree, mantel, railings, windows/doors, and entryway. the 25 ul-rated led bulbs remain cool to the touch and reduce power usage. each 16.8-foot strand has plug-ins at both ends, allowing you to connect 90 sets together for a total of 2,250 lights. for guaranteed satisfaction our c9 string lights are made to last and covered by a 3-year limited warranty. a spare fuse and 2 spare bulbs are included with each set.