About this item This head-mounted magnifier is ergonomically designed and can be used with glasses without taking off the glasses. It is very suitable for people who need to work close, working on small details and senior citizens reading books, newspapers, product boxes. ADJUSTABLE LIGHT FEATURE: The non-fixed design of the illumination area of the light source can illuminate the designated area according to your needs. The lamp holder is flexible and can be adjusted up and down(90o) and fine-tuned left and right(45o). Requires 2 x AAA batteries (not included). 1.2X TO 6X OPTIONAL: The lens is made of acrylic optical lens, the image is clear and not deformed, and it will not create double vision or tunnel vision when used. Four lenses with different magnifications are provided: 1.2X, 1.8X, 2.5X, 3.5X, and two lenses can be superimposed. THE LENS CAN BE FLIPPED UP AND DOWN: The angle between the lens and the line of sight can be adjusted by rotating the fixing nuts on both sides of the headband. The size of the headband can be adjusted to suit everyone's head shape. Its series of head loupe with light weight about (150g), lighting, wide view lens and three-dimensions, for general living use as follows for reference: jewelry designer, jewelry maker, tailor, beauty shop, beauty-maker, embroidery worker, stamp collection, planter (for flower, grass). reader, painter, dentist, veterinarian, animal beauty etc.