These dimmable bulbs are an energy-efficient replacement for incandescent bulbs. They use 86% less energy while providing as much light as a traditional 75 watts bulb at a bright 1100 lumen output. Long-life LED technology means up to 25,000 hours of reliable service that is flicker-free and instant-on at full brightness, unlike compact fluorescent bulbs. They are energy star certified, and ul listed for damp location installation, and contain no mercury or other harmful chemicals.