40 Watt replacement using only 5.5 Watts (450 lumens) Rated to last 13 years based on 3 hours per day use Saves 56 dollars on energy costs per bulb vs. 40-Watt incandescent over the bulb's life Dimmable and works with most dimmer switches Cool, bluish white daylight light with 5000 Kelvin color temperature 8 LED bulbs per package A19 shape and size with frosted finish Medium base (E26) General purpose bulbs for ceiling lights, wall lights and table lamps