The Feit Electric EFC/DM/300/LED LED Light Bulb is 88% more efficient than halogen and incandescent light bulbs and is rated for a lifespan of 25,000 hours. This bulb uses just 4.8 watts while being the equivalent of a 40 watt incandescent/halogen light bulb. The Feit Electric EFC/DM/300/LED LED Light Bulbs offers 310 lumens of bright illumination and has a color temperature of 3000K offering a soft white light at a beam angle of 180 degrees. One notable feature of LED light bulbs is that they contain no mercury and also emit no UV light.