Light output - 390 lumens. Energy used - 40 watts. Life - 3000 hours. 120 Volts. To save energy costs find the bulbs with the light output you need, then choose the one with the lowest watts. Lasts 2x longer than ordinary soft white. (Almost the same light output and lasts twice as long as a 40W, 465 lumen, 1500 hr. bulb.) Proudly made in St. Mary's Pennsylvania.