This Feit Electric light bulb is a dependable desk lamp bulb for residential or commercial applications. Its 3000K warm white light is dimmable and will replace a 20 W equivalent incandescent bulb. It produces a similar light output (170 lumens), uses only 2 W of electricity and up to 80% less energy than a standard incandescent light bulb. Get instant on to full brightness with relatively cool running performance. Feit Electric G4 bulbs have an average life of 10,000 hours or 9.1 years, are RoHS compliant and are entirely mercury free.