E27 light bulb, 4 W with 3000 K. The luminous intensity is 840 lumens at a wattage of 4 W. This light bulb is not dimmable and is suitable for fixtures with an E27 socket. 3000 K emits a warm white light color. The color rendering index has a value of 80. The lifespan is 50,000 hours. Protect your eyes, the environment, and your wallet with LED lighting. Benefit from longevity and energy efficiency: LEDs (light-emitting diodes) have the advantage over traditional incandescent bulbs of not generating heat, instead converting most of the energy into light, thus consuming only a fraction of the electricity. Additionally, LED bulbs are extremely durable and do not need to be replaced frequently. Since LEDs are flicker-free and have a high color rendering index, their light is always pleasant for your eyes. Objects illuminated by LED lighting appear in their true, natural colors.