The Jeweler's Pocket Loupe allows you to thoroughly examine nearly mircroscopic details, and it collapses in the same maner as a pocket knife. When folded, the loupe measures 1.635" x 0.625". The powerful 10x magnifying Loupe's 16mm Achromatic lens provides extreme magnification. The 20x Loupe provides an even closer view! Working distances are approximately 0.5" to 0.75" This folding jeweler's loupe comes with vinyl case in a small white gift box.