E27 4W LED Bulb is a kind of LED bulb which adopts LED as light source, E27 as lamp base. The light is soft and cozy avoiding flickering, so that it is good for our eyes. E27 4W LED Bulb only has 4W power consumption, and can send out different colors such as warm white/cool white, red, green, blue and yellow, etc. It consists of aluminum housing and PC or glass cover that are featured with heat-resistant, corrosion-resistant, impact-resistant and anti-aging. In addition, E27 4W LED Bulb has the characters of long lifespan, environment friendly and no mercury, UV or IR radiation. Compared with traditional incandescent and fluorescent lighting, E27 4W LED bulb has various advantages such as high energy efficiency, low power consumption, easy to install, lower maintenance cost and so on. So it is widely used in museums, art galleries, cosmetic counters, school, universities, hospitals, conference, meeting room, show room, commercial complexes, factories, offices, etc.