This Crompton Lamps 5W LED GU10 spotlight light bulb with a GU10 2-pin twist and lock (10mm apart) fitting is a direct replacement for a traditional 50W light bulb, but has the potential to reduce your home lighting bills and reduce the frequency of needing to replace your light bulbs. This LED GU10 is suitable for use in fire-rated downlights. 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 50W to produce 550lm, this LED version uses just 5W equating to an energy-efficiency of 110lm/W. This high-performance LED light bulb sports a lightweight thermal plastic shell with an internal aluminium heatsink 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 GU10 spotlight light bulb boasts an incredible 8.2-year lifespan if used for 5-hours a day. These light bulbs don’t need to be replaced as often which results in less money spent on replacement bulbs, and less time spent replacing them, too. Combine this superior longevity, negligible maintenance and replacement costs with the LED light bulb’s notable energy efficiency then the savings gleaned from each light bulb has the potential to reduce your lighting costs by up to 90%. Cool white (4000K) bulbs produce a cooler, crisp light and are well suited to more stimulating environments. This makes them great in kitchens, workplaces and is also excellent for bathrooms as there is no colour cast; so applying makeup is much easier. Unlike older other energy-saving technologies, LED bulbs light up instantly, with no waiting time to warm up to full brightness.