The build quality is excellent. The plastic clip holds the spine, the gooseneck is made of solid (and especially durable) material and the lenses in front of the LEDs are perfectly polished and shine also Paperbacks still good. A4 is probably problematic with this lamp, unless you bring them to the long side.
One thing I find incomprehensible, however: The lamp has two light modes, a bright and a weaker, but only via a switch. So the lamp is very bright when pressed once, the second less bright and the third again. A slide switch would have been a more elegant solution!