Height Adjustable-Compact and stylish design, portable weight, easy to use, 3 moveable joints ensure holder can be stretched to any height according to your needs when used as a desktop magnifier. With comfortable ergonomic handle suitable for children, adults, seniors, hobbyists and professionals. Handheld or Desktop -Magnifier glasses can be used as a desktop magnifier by stretching its holder and placing it on the desk. It also can be folded to serve as a hand-held magnifier to realize wider application range. Optics System Offers Extra Wide Field of View with Clear Vision Throughout. Unique Optical Coating Reduces Reflection and Improves Image Clarity. It wide view field, long depth of field, high resolution, low magnification, quick positioning, more exquisite Binocular Loupes is produced byoptical glass material, It can supply f views and deep depth of view. It is used for reduce 's eye ,neck and shoulder fatigue, which is caused by long time lower head work.