Lasts 4 years. 12/23/32 Watt = 50/100/150 watt. $46 In energy savings. (Electricity cost savings based on using the bulb on the middle setting [23 watts] for 6000 hr rated life at 10 cents per kilowatt hour compared to four 50/100/150 watt soft white incandescent bulbs [rated life 1500 hrs.]). Light Output: 600/1600/2150 lumens. Energy Used: 12/23/32 watts. Life: 6000 hours. To save energy costs, find the bulbs with the light output you need, then choose the one with the lowest watts. Made in China.