Features: Premium Material: Wire is made in high-quality copper. The string is thin, flexible, and bendable, easy to DIY or shape around plants, balconies, signs, furniture, and almost anything else. Rice-sized fairy low-heat-emission LEDs are attached to the copper wire, eco-friendly, and safe to touch. USB-charging: Powered by USB. It can be plugged into any USB port like an adapter, computer, USB hub or socket, and power bank, which makes the firefly lights easy to get charged and more convenient for indoor outdoor use. No need to pay an extra fee for changing batteries, which is energy-saving, eco-friendly, and money-saving. Convenient: Just scan the code to download the app. Then you can change the color on the phone with 16 million choices. Dance to music: Just switch to the music mode on the phone. Then the lights will dance to the music beat, providing a wonderful and audial and visual feast for you. Wide Application: It\'s waterproof.The USB powered fairy string lights can be applied both indoors and outdoors, like bedroom, dormitory, bar, window, goblet, Christmas tree, fence, curtain, galleries, patio, backyard, porch, or pergola. They can add the perfect ambiance to any space. It can also be used on various occasions, birthdays, weddings, festivals, graduation, Christmas, Halloween, Valentine\'s Day, Fashion Show, and so on. Any problems, feel free to contact us. Honor to serve you!