GE Lighting 23724 LED 4.5-watt 350-Lumen Dimmable A15 Ceiling Fan Bulb with Medium Base, Daylight, 1-Pack 40 watt replacement uses only 4.5 watts Provides 350 lumens Lasts 13.7 years based on 3 hours per day usage Estimated yearly energy costs $0.54 based on 3 hours per day $0.11 per kWh $59 in energy savings over the life of the bulb based on 3 hours per day usage