Green-Lite LED Magnifier has a 7 Inch x 5-1/4 Inch rectangular 4 diopter lens, a 43 Inch reach and a table edge clamp 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 carbon black rectangular LED Magnifier with table edge clamp. 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. Patented Elite arms are slim but have the greatest holding power of any arm of this type in the world.