GE Lighting 64477 Energy Smart CFL 13-watt 825-Lumen Biax Light Bulb with G23 Base Uses 13 watts Provides 825 lumens Lasts 9.1 years based on 3 hours per day usage Estimated yearly energy costs 1.57 based on 3 hours per day 0.11 per kWh 2700K soft white light appearance