GE Lighting 72308 57-Watt 730-Lumen General Purpose BT14.5 Halogen Light Bulb, Soft White 730 lumens providing comfortable, inviting light Lasts 2.7 years based on 3 hours per day usage Estimated yearly energy costs $6.87 based on 3 hours per day $0.11 per kWh BTT shape with medium base for use in table lamps and enclosed fixtures 2800K soft white light appearance