Dimmable LED C9 Christmas bulb in blue. Transparent and faceted exterior for a vibrant yet soft color display. This SMD Chip Bulb is constructed with durable acrylic plastic. Magnifer and water sealer protects the LED diodes. Approved for indoor and outdoor usage, and rated for 60,000 hours. LED bulbs are 10 times more energy efficient than incandescent bulbs and will last many years longer. Connect up to 350 feet continuously in C9 socket cord.