GE Lighting 69163 38-watt 490-Lumen Energy-Efficient Halogen Floodlight Bulb with Medium Base Base: Medium Skirt (E26/50x39) Indoor Floodlight, 1500 hrs, Sodalime glass. Lasts 1.4 years based on 3 hours per day usage Estimated yearly energy costs $4.58 based on 3 hours per day $0.11 per kWh PAR20 indoor floodlight with medium base for use in directional fixtures such as recessed can lighting