Decorate your life and home with the our copper wire string fairy lights. Each Christmas lights is 33ft long with 100 micro LED bulbs. The USB cord is 11.8Inch, which suits for indoor use. The spacing between every LED bulb 4inch. The firefly lights are powered by USB interface that can be plugged into any USB port like computer/ laptop, USB hub/ socket, power bank. It is convenient to use USB fairy lights indoor & outdoor, the campers and hikers also can use them by connecting to power bank. The wire of them could be easily molded into any shape you desire. Free your creativity and enjoy the DIY fun. These decorative lights are IP44 waterproof that are suitable to use indoor & outdoor. Steady on lighting mode, no dizziness feeling, The Holiday Aisle® string lights offer dreamy glow to your private space and add a whimsical ambience. A great choice for kids room, bedroom, dorm, curtain, bookshelf, photo frame, tapestry, vase, table craft decoration.