[4 Interchangeable Lenses] 1.5X, 2.0X, 2.5X, 3.5X, The lens range for your needs is individually adjustable, with excellent magnification and the distance between the eyes and the magnifying glass can also be adjusted. Multiple choices of lenses can meet your various demands [USE] The lenses / magnifiers can be easily assembled and disassembled, and one lens can move a little further from the horizontal to find the most satisfactory angle, ideal for close-up work, such as watchmaking, jewelry making, miniature engraving, electronics or instruments. repairs [Sturdy and stable] The glasses are very comfortable on the nose, even with the thickest glass. The noseband and forehead are well padded. The protective mask can be used with any pair of glasses, also allows you to adjust the tightness, wearing is not easy to fall off, convenient and better work [More comfortable to use] A lightweight ergonomic frame with soft padding is available to fit your reading glasses. The headband can not