Perfect for precision work, this lamp magnifies your work and also lights up your work surface. Trim designed lamp features a fully adjustable internal spring arm with 45" reach. Includes extra large 5" diameter, 3 diopter glass lens with 1.75X magnification. Adjustable lamp head. Removable protective lens cover makes this magnifier lamp usable as a table lamp. Takes one T5 22W energy-saving compact fluorescent bulb (included). Includes heavy-duty desktop mounting clamp that fits up to 2.5" thick surfaces. All metal construction with electronic ballast. UL listed.