This is a 'small' microscope because it's only 8½ tall (most microscopes are 12 to 15 inches tall) and it's made of plastic and it's small and lightweight enough to carry in a bag. But it's not a pocket microscope. And it's not a toy. It's from the same manufacturers who make of our full-size professional microscopes, with large wide-field (WF) eyepieces.
Use it instead of a loupe, the quality is better than any 20X loupe and, being stereo, it's so easy to focus and to use. In fact, I would say: if you want a 20X magnifier and want the best possible quality, don't even think of buying a loupe, this is better (unless, of course, you really do need to carry it in your pocket).
Size: 8½ X 4 X 5½ inches
Light: powered by 2 X AA batteries.
As a laboratory microscope - definitely not, but as an alternative to the very best jewellers loupe, absolutely! The stereo view and the quality of the lenses make this perfect for inspecting stamps and coins, the grain in prints and photos, the composition of fabrics... In quality it is better than the best (Zeiss) loupes (but, of course, it is not pocket-size).