10X Round Loupe Great For Viewing Stamps, Coins, Beads & Gems. This is a new 10X round loupe. Great for viewing stamps, coins, beads and gems. May help reduce eye strain. The swing away case protects the lens. The viewing lens measures approximately 16 mm (5/8") in diameter. It has a 1" (25.5 mm) focal distanceWe work hard to update our descriptions and pictures of our merchandise. As part of a process of ongoing innovation by our suppliers, newer versions of the item shown may be shipped before we are able to complete an update. As a result there may be a slight variation in color and design.