This dimmable LED golfball from Crompton Lamps is designed to reproduce the incandescent glow of a traditional bulb without the same drawbacks, particularly in terms of efficiency and performance.It produces the same light output as a 40W filament bulb but requires just 6.5W to do so, hence the excellent A+ energy rating.It can be paired with any compatible dimmer switch so that brightness and intensity can be altered to suit a particular mood, while the clear envelope and unique lens design mimic the look of a traditional filament light bulb.Despite the comparable aesthetics, this bulb boasts all of the modern improvements you might expect from an LED product. A nominal lifetime of 15,000 hours means it is expected to last around 15 times longer than the 40W bulbs it\'s designed to replace, while a vastly superior level of efficiency allows it to shave up to 90% off your lighting bill during its lifetime.