Reminiscent of flickering candlelight, these C9 transparent clear twinkling Christmas light bulbs brighten your home or office holiday decor. The transparent ceramic bulb lets the incandescent filament shine through. The 10-watt intermediate base bulb burns cooler, uses less energy and lasts longer to give you 3,000 hours of trouble free lighting. UL listed for indoor/outdoor use, they are economically packaged 25 to a pack. Bring drama to your home, trees or holiday displays this season or all year with these dependable twinkling lights.