Featuring a warm white glow, this Edison screw cap bulb offers four-watt power output, saving 90% more energy over traditional light and have the life expectancy of 15 years.Please note: This is a non-dimmer bulbLight your home in a versatile and environmentally friendly way with LED lighting. LEDs are very energy-efficient, using up to 90% less energy than incandescent bulbs and they also have a life expectancy of up to 50 times longer than traditional bulbs. LEDs have the advantage of producing a lot less heat, as well as offering the choice of a warm golden glow or a cooler white light, meaning you can find the best lighting tone to suit your home. There is an LED equivalent for most bulb cap types and bulb shapes that will be suitable for your light fittings.