Kurt Adler 9' 20-Light Battery-Operated Clear C7 Bulb LED Fairy Lights These battery-operated 20-light clear LED Fairy lights are a beautiful addition to your holiday and Christmas tree. This assortment features Fairy lights with flat clear C7 shaped bulbs over the fairy light for a C7 Bulb shape and effect. Steady On, Warm White, Fairy Light Strand Uses 3 AA batteries, not included. Automatic timer function (6 hours on/18 hours off). For indoor use only. Holiday Novelty Christmas Lights Sets C7 Christmas Bulbs Lights Themed Christmas Lights Decorations and Decor By Kurt Adler 9' 20-Light Battery-Operated Clear C7 Bulb LED Fairy Lights. These battery-operated 20-light multicolor and clear LED Fairy lights are a beautiful addition to your holiday and Christmas tree. This assortment features two different styles of Fairy lights, multicolored C7 bulbs and clear C7 bulbs.