This bulk-buy value pack of 3x Crompton Lamps 4.2W dimmable LED golfball light bulbs with ES-E27 Edison screw (27mm) fittings are direct replacements for traditional 40 Wattage equivalence light bulbs, but have 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. Whereas a traditional light bulb would use 40W to produce 470lm, this LED version uses just 4.2W equating to an energy-efficiency of 112lm/W. This high-performance LED light bulb sports a lightweight thermal plastic shell that is designed to dissipate heat very effectively. With a long life of 15,000-hours, this LED golfball 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%. This 0%-100% dimmable lamp is compatible with most leading and trailing edge dimmers. Warm white (2700K) bulbs produce a warm, yellow light which is comparable to traditional incandescent bulbs and are most frequently used to create a relaxed atmosphere. This makes them great in any room in your home, but especially in rooms such as the living room or bedroom where you would like to create a comfy atmosphere. LED bulbs light up instantly, with no waiting time to warm up to full brightness. This LED golfball light bulb is a small round light bulb that will retrofit directly to any existing ES-E27 fixture; whether that be smaller domestic light fittings such as bedside lamps or fixtures with limited space or up to large-scale commercial installations.