Green-Lite LED Magnifier has a round 6 Inch 4 diopter lens, a 43 Inch reach and a screw down base fitting. Green-Lites employ next generation “surface mount” LEDs that produce more light with less glare, consume less power and last longer. The light output of the 8W LED array is comparable to a 150W halogen. The blended white light is easy on the eyes and the output level is adjustable - simply and precisely - for maximum operator comfort. Green-Lites products are auto-switchable, too, so they can be used worldwide simply by changing the end power cord. - Green-Lite shadow white round LED Magnifier with screw down base. It is equipped with next generation, surface mount LEDs, these innovative designs create the new standard for illuminated magnifiers. Multi-angle LEDs for shadowless lighting at a full range of focal lengths and heights. New 6 Inch round lens with 44% more viewing area than old style 5 Inch round lens - an O.C. White exclusive at no extra charge. Patented Elite arms are slim but have the greatest holding power of any arm of this type in the world.