Stalwart 30X Jewelers Eye Loupe Magnifier with Case 30x Magnification 21mm diameter lens Sturdy case with soft plastic lined felt interior for protective storage, strong steel casing Small loop for attaching neck chain or key chain Great for jewelers, coin collectors, watch repair, stamp collectors, crafters and more Dimensions: length: 1.5 inches, width: 1 inch, height: 75 inch; case dimensions: length: 2.25 inches, width: 1.6 inches, height: 1 inch