The 13mm lens is pretty small, which might throw some people off if they're used to bigger loupes for scanning large rock surfaces, but for a 10X magnifier you're basically trading field of view for that extra detail and it works well enough for close-up grain inspection on coins or small mineral fragments.
What it does is give you a clean, sharp image without the rainbow fringing you'd get form cheap plastic lenses — the achromatic optical glass handles that pretty well, and the working distance is about 23mm so you're not jamming the lens into the sample, which matters when you're trying to avoid scratching a coin's surfce.

Teh folding metal handle is actually sturdier than most of folding types I've handled, and the whole thing fits in a shirt pocket easily enough, but don't expect it to hold up if you drop it on concrete from any height (the glass is glass after all, and the 13mm diameter is fragile if you land on the edge).

We ordered the HB brand model 0801AA specifically because the achromatic lens is better than the single-element magnifiers for this price point, and the 10X magnification is the sweet spot for checking mint marks or tiny inclusions without needing a microscope, though for large-area scanning of a whole hand sample you'd want a lower power.
Packaing comes in a gift box inside a carton, which is fine for storage, and the MOQ was reasonable at 50 units or so — we usually have stock but confirm lead time if you need more than that, and the HS code is 9013801000 for customs.
Our standard MOQ is 500 pieces per model, but we can discuss smaller trial orders depending on stock availability.
Lead time is usually 15-20 working days after order confirmation and deposit receipt, though it can vary slightly with order volume.
Yes, we can supply a Certificate of Analysis for the optical glass and other relevant quality documents upon request.
The 13mm specification refers to the outer diameter of the lens itself, not the clear aperture.
Each unit comes in a gift box, then packed in a carton. We can customize the box with your logo or artwork for MOQ orders of 1000 pieces or more.