PacLights Ultra100 Performance LED Light Bulb 20-watt, Warm White, 100w Equivalent Replacement (1400 lumens), E26 Medium Base with E40 Mogul Adapter Replace 100W Incandescent bulb by 20W LED, Save Over 80% Energy 40,000 Hours Lifespan. Even Works in 158 Degree Fahrenheit - 30,000 Hours Life Active Cooling Technology: Quiet and Efficient Oil-less Bearing Fan High Performance LED Chips, Electrolytic-Capacitor-Free Driver, Overheat Protection Eco-Friendly. No lead or mercury. No UV or IR Radiation