The Mainstays 10-Count Solar Powered Flame Effect Lantern string lights will give your backyard the ambience it deserves without the hassle of a fire. Our Flame String lights are great for Halloween decoration, Bedroom, Living Room, Bar, Hotel, Outdoor Gardens, Restaurant, Coffee shop, Villas, Wedding decorations, Party, Church, Castle and more. With 10 extra hooks,it is quite easy to string up for rooftop deck. This string light is solar powered, no sockets needed, just put it under the sunshine to absorb the solar energy, then the solar panel will transfer the solar energy into electricity. It is really energy-saving and help you save time.