This Crompton Lamps 5W dimmable LED golfball light bulb with a SES-E14 small Edison screw (14mm) fitting is a direct replacement for a traditional 40W light bulb, but has the potential to reduce your home lighting bills and reduce the frequency of needing to replace your light bulbs.LED technology is much more energy efficient than traditional light bulb technologies such as incandescent bulbs. This not only helps you save on your energy bills but also helps the environment too.Whereas a traditional light bulb would use 40W to produce 470lm, this LED version uses just 5W equating to an energy-efficiency of 94lm/W.This high-performance LED light bulb sports a lightweight thermal plastic shell that is specifically designed to dissipate heat very effectively. This reduces the light bulb's running temperature and places less strain on its components resulting in a longer life span.With a long life of 15,000-hours, this LED golfball light bulb boasts an incredible 8.2-year lifespan if used