Create a captivating holiday light display with brilliant blue LED bulbs! Energy efficient blue LED bulbs and our highly durable stringers combine to create a long lasting, weather resistant lighting design that is easy to install and provides professional display for years! Opticore bulbs emit superior, vibrant light while maintaining the unbreakable, energy efficient benefits you want. Plus, these string lights are end-to-end connectable, so you can connect different lengths together up to 1,000 feet (960 max watts). White wire blends with white gutters and house trim and many other light-colored backdrops. Hang these lights along the roof, across a porch or fence, or wrap them around trees for your most exciting holiday light display ever!