Energy Efficient 3-Way Bulb - Uses 6/12/18W to yield equivalent illumination of 50/100/150W Incandescent and Halogen bulbs. Bright 650/1300/2150 lumens Long Lasting - These Great Eagle LED bulbs last 20x longer than incandescent bulbs. Each light bulb is expected to deliver a lifetime of over 22 years (average usage rate of 3 hours per day) Instant On – Full brightness immediately. No waiting like CFL bulbs to warm up Safe – UL Listed for safety, Mercury and Lead-free, and no UV or IR radiation Do Not Use Dimmer Switch with 3-Way bulbs. For use only with light fixtures intended to operate with 3-Way bulbs This Great Eagle LED light bulb offers 3 levels of illumination using a 3-way desk lamp, floor lamp, or table lamp. With each click of the switch, the LED bulb will cycle between off, 50w, 100w, and 150w equivalent brightness using only a fraction the power needed compared to an incandescent or halogen bulb. The Great Eagle LED family will immerse the room in beautiful light whether in a cozy family room, hotel lobby, or restaurant. This is a professional grade light bulb which is UL Listed, FCC and ROHS certified. Soft White 3000K is well suited for incandescent/halogen bulb replacement. Clear brilliant light with no additional yellow or blue tones added. A great all around color that can be used anywhere.