This year, leave the extension cords packed away and use these battery-operated lights instead. Bright, energy-efficient and cool to the touch, they will run up to 30 hours on 3 AA batteries. Six and a half-foot string is a perfect length for wreaths, tabletop trees and centerpieces. No more unwieldy extension cords Smart holiday lighting - no outlets required! LED bulbs are long-lasting, bright and cool to the touch Perfect for tabletop trees, doorway wreaths and more Uses 3 Alkaline AA batteries, sold separately Each 6-1/2' string has 20 unbreakable 1/4" lights 4" between bulbs Green-coated wire On/off switch UL-listed for indoor use only