Solar Wind Chimes: Our wind chimes for outside are automatically charged during the day and automatically lit at night. Make sure turn wind chime switch to ¡°ON¡± position before charging and hang the hummingbird solar lanterns on the place where can be illuminated by the sun. At night, it will light up your garden and its shadow of the base will cast on the wall, the tree, the floor in your garden, and create a wonderful atmosphere. It can last up to 8 hours on a full charge.