These antique LED S11 shape light bulbs with a medium screw base (E26) are dimmable and energy-efficient, making them an excellent replacement for incandescent bulbs. Create a unique atmosphere with these S11 string light bulbs' Edison style. With their vintage aesthetics, they are a perfect fit for light fixtures used in your porch, living room, bedroom, office, etc. At 4 watts, they use 86% less energy while providing as much light as a traditional 30 watts bulb at a 340-lumen output. Long-life LED technology means up to 15,000 hours of reliable service, flicker-free and instant-on at full brightness, unlike compact fluorescent bulbs. These bulbs have a high color rendering index of 90, and they are UL listed for damp location installation and contain no mercury or other harmful chemicals.