O my gosh I love these lights wish they weren't all on batteries,but the positive is you can put them any where. Each string takes 3 batteries. Make sure you have enough. I bought 10 and in different colors. One string of lights didn't work,but just called and they sent me a replacement just in a few days. I'm very impressed with Wayfair. They have great customer service and they always answer there phone. Glad I got this on sale.