40 Watt replacement using only 3.5 Watts (300 lumens) Rated to last 13.7 years with an annual operation cost of 0.42 dollars based on 3 hours per day use at 11 cents per KwH Dimmable and works with most dimmer switches Warm, soft white light with 2700 Kelvin color temperature CA11 shape and size bulb with bent tip and clear finish