The Feit Electric LED Enhance product line features our highest quality energy-efficient light. This dimmable R20 reflector LED light bulb has an E26 medium base that fits most standard household sockets. It produces a similar light output while using 89% less energy than a standard 45-watt incandescent light bulb. Its 5000K Daylight glow provides cool, invigorating light ideal for seeing objects in fine detail. Set the mood with smooth dimming using LED-compatible dimmer switches (sold separately). This high-performance bulb also has a high color rendering (CRI) of 90+ so colors appear more realistic and vibrant. Get instant on to full brightness with relatively cool running performance. These Feit Electric R20 bulbs have an average life of 25,000 hours/22.8 years are RoHS compliant, and are 100% mercury free. Choose a dependable Energy Star-approved bulb for residential or commercial track lighting, outdoor lighting, and more. Suitable for enclosed fixtures or outdoor use.