Sylvania Double Life Light Bulb, A21, 3 Way

50/100/150. 120V. Indoor. Lasts 2 x longer (almost the same light output and lasts twice as long as a 50/10/150w 620/1540/2160 lumen 1200 hr bulb). Light Output: 620; 1540; 2160 lumens. Energy Used: 50;100; 150 watts. Life: 2400 hours. Made in USA.