Includes four LED 3-Way A21 bulbs with E26 base for easy screw-in installation. Enjoy the energy-savings and beautiful light of Philips LEDs and save up to 80% on your energy usage. EyeComfort: Our LED lights are designed for the comfort of your eyes, meeting our strict criteria for EyeComfort, a standard we developed to measure key factors that impact the comfort of your eyes. Commitment to Sustainability: Signify is committed to creating brighter lives and a better world by reducing the environmental impact of our products, phasing plastic out of our packaging and replacing with alternatives such as recycled paper. This bulb has a color temperature of 5000K, creating a lighting effect that is very close to that of natural daylight.*