GE Lighting 64161 Energy Smart Bright from the Start CFL 20-Watt (75-watt replacement) A21 Light Bulb with Medium Base, 2-Pack 75-watt replacement uses only 20-watts Lasts 6.2 years based on 3 hours per day usage Estimated yearly energy costs $2.41 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 A21 shape with medium base for use in table lamps and enclosed fixtures