These fairy lights are nice and bright and always seem to bring a smile to my face. They are ten feet long and battery operated, using three AAA batteries, which are not included. I love using these for making my crafts but was looking for a string that was long enough for the front of my Christmas village. This one is perfect! it is copper wire so i can bend it to shape, and lots of nice LED lights to brighten up my scene. The batteries last for a long time (unless i keep them on all the time). I will be usuing these inside, although the lights themselves are waterproof, the battery case is not. these also make a great nightlight in a childs room. My granddaughter thinks they are magical unicorn lights!