Features: Left and right double eye patches magnifier/loupe with adjustable LED. LED light source and battery compartment are designed separately. Handsfree eyeglasses legs and headband are interchangeable to ensure more comfortable and tight wearing. Eye patches can be moved leftwards and rightwards, and can rotate 180 degrees upwards and downwards. Widely used in mechanical processing, electronic repair, jewelry appraisal, timepieces repair and miniature engraving, etc. Descriptions: Mechanical processing, electronic repair, jewelry appraisal, timepieces repair and miniature engraving etc. Ergonomic design. Compact, lightweight and portable. Specifications: Lens magnifications: 20X Battery: 3 * 2 LR1130 batteries Color: Black Material: ABS + Optical lens Package includes: 1 * Eyewear magnifier 1 * Pair of lens 1 * User manual (English & Chinese) Notes: the product can not be asdjusted. Any information uncertain, please contact us. Thank you!