XLEDIA X50N - 7.4 Watt - 640 Lumen - Cool White (5000K) 80% More Energy Efficient Than Incandescent - Replaces 50 Watts With Only 7.4 Watts First And Only Directional LED Suitable for Fully Enclosed Fixtures Extremely Light Weight - 30% to 50% lighter than most LED bulbs High Efficiency Power Circuitry - .99% power factor Greater than 40,000 Hour Life Expectancy