Includes replaceable LED bulb. All metal design. Fully adjustable swing arm easily positions for focused, directional lighting. Flicker-free light zone that is clear of shadows, halos, and troublesome glares. There are two different options available. One option is the clamp mount for desktop mounting with versatility. The second option is a flat base to sturdily fit on any desktop or tabletop . With an extensive long reach of 36", it can easily clear monitors and other objects.