Christmas Light, Imarku 39ft 100 LEDs Best Fairy String Lights for Gardens, Homes, Christmas Party(RGB) This solar LED works by converting solar energy into electricity during the day, and it lights up automatically at dark. 103 LED lights steady and flash in a string, form a beautiful and fairy world. Sealed process, with good waterproof performance. Suitable for indoor and outdoor decoration with trees, wreaths, etc. Any quality problems about the product, please contact us first.