100% Satisfaction Satisfaction Guaranteed. 50-Light LED Blue and Cool White Faceted C9 String Light Set. Holiday Decor Product Type. Blue + White Lights. Maximum Number of Sets Connected. 25 blue and 25 cool white OptiCore C9 LED bulbs. Green E17 stringer with 12 in. Spacing between each socket. Dimmable, SMD LED diode produces brilliant light. OptiCore faceted Christmas light sets create a dazzling, colorful string light display that’s durable, energy efficient and beautiful. The lens is 115% thicker than ordinary bulbs and made of polycarbonate, up to 200 times stronger than glass. This makes OptiCore bulbs virtually unbreakable. The SMD LED diode inside the bulb saturates the lens evenly with vibrant light, giving these bulbs the perfect brightness and color. And with an average lifespan of 60,000-hours, these are bulbs that will last for years. Get rich, colorful Christmas lights that can stand up to rough treatment with OptiCore LED string lights from Wintergreen Lighting. We offer the best prices around on high quality products. Our E-store includes media such as books, movies, music and games while offering electronics, toys, sporting apparel, clothing, tools, general home, garden items and more. We are always working hard to ensure your package arrives as soon as possible. We do not accept P. Please provide a physical address. We try over very best to make sure every customer is completely satisfied. If there’s a problem, message us! We’re happy to help.