Carson LumiLoupe Series Pre-Focused Stand Magnifier Loupes (LL-10, LL-20, LL-55, LL-77) Pre-focused dual lens loupe for close-up viewing | Lens Diameter: 1.0 inch 10x power stand magnifier | Transparent Acrylic base lets in lots of ambient light Great magnifying loupe for jewelers, watch making, photography, printing, geology, biology, electronics, coin and stamp collectors, crafts and hobby Item Dimensions: 2.0 inch x 2.0 inch x 1.75 inch | Weight: 1.4 ounces Backed by Carson's limited lifetime warranty