40 Watt replacement using only 5 Watts (350 lumens) Rated to last 13 years based on 3 hours per day use Saves 57 dollars on energy costs per bulb vs 40-Watt incandescent over the bulb's life Dimmable and works with most dimmer switches Pure, clean high definition plus light with 2850 Kelvin color temperature 4 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