About this item‍Suitable for All Tasks : It comes with 5 interchangeable, detachable lenses and storage box. Perfect use for reading,mechanical processing, electronic repair, jewelry appraisal, timepieces repair and miniature engraving, etc.‍5 Replaceable Lenses : Single-plate lens magnification: 1.0X, 1.5X, 2.0X, 2.5X, 3.5X, bi-plate lens magnification: 3.0X, 4.0X, 4.5X, 5.0X, 5.5X, 6.0X.you can choose to use them singly or two at a time.‍Two Bright Lamps : The head magnifiers also has a bright lamp with 2 LEDs, which can be rotated to 60 degrees and is operated with 3 AA batteries(not Included),very convenience for you.‍Adjustable & Comfortable : By using head gear tightening knob,the headband not only can be adjusted to fit all head si.