GE 71364 150AW/RL/HAL-TP6 Halogen 150-Watt A21 Reader Bulb 6 Pieces 2650 lumens providing clean, beautiful light Lasts 1.8 years based on 3 hours per day usage Estimated yearly energy costs $18.07 based on 3 hours per day $0.11 per kWh A21 shape with medium base for use in table lamps and enclosed fixtures 2900K light appearance