Bat Shape LED String Lights, Powered by 3pcs AA Batteries (Not included) (bat) Special modeling extremely fits the holidays and gives us strong festival atmosphere. Two light switch modes: Steady ON /FLASH Waterproof, suitable for both outdoor and indoor use. Energy-saving and environmentally friendly, very low heat generating and safe. Powered by three 1.5V batteries, safe and reliable power supply, its convenient to use, and you can hang it in any place to decorate.