Specifications: Material: ABS Magnification Times: 1.5X, 2X, 2.5X, 3.5X, 4X, 4.5X Focal Distance: 357mm, 274mm, 204mm, 158mm, 136mm, 125mm Light: 2 LEDs (2 brightness settings) Power Supply: rechargeable lithium battery(built-in) Battery Capacity: 300 mAh Packing List: 1 * Magnifier 1 * USB Cable 1 * Cleaning Cloth 1 * Pouch 1 * Storage Case 1 * User Manual(English) Optical acrylic lens features excellent clarity, scratch resistance, and is able to offer excellent distortion-free clarity. It doesn't break or shatter as glass lenses do. Comes with multiple interchangeable lenses that provide you with different kinds of magnifications, ranking from 1.5x to 4.5x. LED lighting with two brightness settings provides clearest quality on the object, which is convenient for clock and watch repair, jewelry identification, and electronic maintenance. Fit around your head, and hold magnifying glasses on your eyes to let you see smaller objects in a magnified view, lightweight and comfortable to wear. Suitable for professionals, technicians, machinists, hobbyists, craftsmen, or even people that are simply working on projects at home that involve small pieces.