Net Weight: 85g.

Size: 5.0 x 3.3 x 2.8 cm.
Material: optical glass with plastic case.
Battery model: LR1130.
Special designed of two kinds of magnification:30X (with lens diameter of 22mm) ; 60X (with lens diameter of 12mm).
Quality lens for extra sharpness and clarity.
LED light helps to use under insufficient sunlight or dark environment.
Great for identifying small marks on jewelry.
It comes with its own protective hard plastic felt lined storage case.
The lenses are protected when not in use by the swing-out chrome plated metal cover. It's perfect for industrial purpose, Circuit board and Printing, Medicine. Horticulture, Coins and Stamps, Jewelry appraisal, Education, Geography, House living and Office.
Foldable and tiny, great to have one in your pocket.
Replacement of batteries: Inset the key attached to this product into the two holes of battery cover ,turn anticlockwise to loosen battery cover ,take out the old batteries and then put the new batteries inside, finally turn the cover board clockwise to tighten it.
Note: the key is inside the gift box ,just below the loupe.