This dimmable LED GLS light bulb from Crompton Lamps is distinctly more efficient than the incandescent versions it\'s been designed to replace.It consumes just 17.5W of power but produces the same warm white light you\'d expect from a traditional 100W filament light bulb.Such remarkable efficiency - when considered alongside the light bulbs superior longevity and reliability - can reduce your lighting bill by up to 90% while simultaneously reducing carbon emissions. A thermal plastic casing houses the light bulb\'s components and dissipates heat away from them more effectively than existing materials, thereby extending the light bulb\'s longevity even further. This results in an LED light bulb that is reliable, green, elegant and easy to install. Features a ES-E27 Edison screw (27mm) base/cap. Also known as an A70 light bulb.Please visit the manufacturer\'s website for up-to-date dimmer switch compatibility lists for this Crompton Lamps LED GLS light bulb before purchase.To find the answers to some common questions about LED dimming, please read our guide Dimming for Dummies.Need more help in choosing a suitable light bulb? Read our guide What is a GLS Light Bulb.