Len diameter: 21mm. Inspect object at 30 times power. Size: 38 x 26 x 18 mm. Great product for the watch making industry, specially for inspecting those tiny objects. Good for jewelry, coins, stamps and antiques etc. Use this to easily tell if your painting is a print or a real painting. Great for identifying small marks on jewelry. Look at the diamonds in your ring close-up!. Foldable and tiny, great to have one in your pocket all the time. Silver in color. Glass lens. Come with the original factory box. Close