GE Lighting 73026 45-Watt 350-Lumen Track and Recessed R20 Incandescent Light Bulb, Inside Frost Uses 45-watts 350 lumens providing subtle, reassuring light Lasts 1.4 years based on 3 hours per day usage Estimated yearly energy costs $5.42 based on 3 hours per day $0.11 per kWh R20 indoor floodlight with medium base for use in directional fixtures such as recessed can lighting