This Crompton Lamps 13W LED GLS light bulb with a ES-E27 Edison screw (27mm) fitting is a direct replacement for a traditional 100W 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 100W to produce 1521lm, this LED version uses just 13W equating to an energy-efficiency of 117lm/W. This provides a substantial improvement over 100W incandescent light bulbs.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 GLS li