Create a lighting display reminiscent of your childhood holidays with the cool tones of these C9 opaque blue Christmas light bulbs. Using only 7-watts, the 120 volt bulbs burn cooler; use less energy and last longer. These intermediate base ceramic bulbs give you 3,000 trouble free hours while letting the incandescent filament shine brightly. UL listed for indoor/outdoor use, they come economically packaged 25 to a box. Make your holiday displays festive and inviting with these colorful opaque bulbs.