GE Lighting 72021 57-Watt, 575/770-Lumen A19 Light Bulb with Medium Base, 24-Pack Uses 57-watts Lasts 1.1/2.9 years based on 3 hours per day usage Estimated yearly energy costs $6.87 based on 3 hours per day $0.11 per kWh A19 shape with medium base for use in table lamps and enclosed fixtures 24 bulbs per package