This 3.5W LED GU10 from Crompton Lamps sports a distinctive long barrel design that adds an extra 25mm to the length of its body, which allows it to fit deeper downlight fittings more comfortably than standard GU10 bulbs.It produces the same cool white light as a 40W halogen bulb and concentrates it within a wide 110 beam angle.Despite this, it is markedly more efficient and uses up to 90% less energy, while lasting upwards of 15,000 hours.This results in a bulb that uses less energy, lasts longer, and looks exactly the same as those it has been designed to replace.Recommended for indoor use only.A warm white version of this bulb is also available.