4000 lumen brightness while only consuming 40 watts of electricity, compared to a 200-watt incandescent. Uses 80% less energy than traditional 200-watt incandescent light bulb. LEDs instantly illuminate to full light output without any start-up time. With rated life up to 50,000 hours, this bulb lasts 50 times longer than traditional incandescent light bulbs lasting only 1,000 hours.