Adjustable Height w/Spring Tension Control Optical Acrylic 3 Diopter Lens Weighted Base & Bonus Clamp on base Silver with Translucent Blue Accents Rated for 40 Watt Bulb (included)
Customer Rating: Summary: Don't bother, it's pretty much a piece of junk Comment: You can find something better at your local office supply for less money.
It's made almost entirely of plastic (light weight plastic at that). It fits the clamp-on base so tightly that you would need to wrench the base down to keep it from swiveling with the lamp.
As for the "achrylic lens", read "warped plastic". It's so full of distortions that you'd probably get a headache from using it.
It's fine if you want a sexy looking lamp to accent your desk, but if you're looking for a practical lamp you can work with this one is wanting.
I'm not usually so critical, but after shopping around I've found that if I pay a bit more I get a bit more quality. That premise failed me this time.
I gave it a star because, after all, the lamp works.