GE Lighting 66664 Energy Smart Dimming CFL 15-watt 550-Lumen R30 Floodlight Bulb with Medium Base, 1-Pack 65 watt replacement uses only 15 watts 550 lumens providing cozy, relaxing light Lasts 7.3 years based on 3 hours per day usage Estimated yearly energy costs 1.80 based on 3 hours per day 0.11 per kWh 44 in energy savings over the life of the bulb based on 3 hours per day usage