Size is as-packaged, or the diameter of loose marbles. ("D" is the diameter of round items other than marbles.)
: 2 x 2 x 1"
This loupe provides 10x magnification via a single 21mm optical-quality glass lens, not the dual 5x plastic lenses found in cheap magnifiers that result in greater distortion. Metal body with loop for key ring/neck strap. Housed in a plastic case with telescoping lid & boxed. This is a high-quality loupe at an affordable price. Seen elsewhere for $14. 99 - we got a great bargain from a company going out of business, and so we can offer these at great pricing!