Royal Designs LB-1004-2 Incandescent 3-Way 50/100/150-Watt A19 130V Light Bulb, 2 pack, Soft White E26 Medium Brass Base 3 way light bulb - 50/100/150 watts Rated Life: 2500 hours Lumen (light output): 1600 Packaging is highest quality and may vary slightly from photo.