GE Lighting 72472 Energy Smart Spiral CFL 13-Watt (60-watt replacement) 825-Lumen T2 Spiral Light Bulb with Medium Base, 1-Pack 60-watt replacement uses only 13-watts 825 lumens providing comfortable, inviting light Lasts 7.3 years based on 3 hours per day usage Estimated yearly energy costs $1.57 based on 3 hours per day $0.11 per kWh $41 in energy savings over the life of the bulb based on 3 hours per day usage