The Lightview Screw Clamp 1st Edition is your portable lighting solution. Use the Screw Clamp to place the lamp on a table between projects or on the side to focus exclusively on a single activity! This Lighteview reaches a maximum height of 33". It features three hinges on the adjustable arm with two poles 16" in length each. The lamp includes a lens dust cover and a desk clamp that opens up to 2.5 inches wide to maximize mobility. This Lightview Screw Clamp features a lens that measures 5" in diameter and is 1" thick. Magnifying 225%, this lamp provides light without any of the glare. The lamp offers an authentic diopter glass magnifier lens with an 8" focal range. The Lightview's On/Off switch is conveniently located at the bottom of the head, just under the lens on the left side. This Lightview Screw Clamp features a 9 Watt, 800-Lumen power-saving LED light of 6,000K cool white light. Rated to last 20,000 hours, light bulb changing is now a thing of the past. THe lamp's LED technology lets you reduce your energy consumption while staying cool to the touch; the bulbs never overheat even after being on for hours!