Features: Premium Quality- Made of high quality plastic and acrylic optical lens with fine details, this headband magnifying glasses weights about 266g2 leds (powered by 3 AAA batteries) are small and exquisite, bright and comfortable, with long life span.Changeable Lens - Includes 5 inter-convertible and detachable lenses and a storage box (lens magnification power marked in the middle of lens).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. If the Magnification is insufficient,you can superpose two lenses.Easy to Use- The headband magnifier is hands free design, just wear it on your head after easily insert the lens. Brings hands-free variable magnification detail views. Great for hobbyists and professionals for mechanical, medical observation and repair work.Comfortable Wear Experience - The head band is adjustable using head gear tightening knob, light source box can also be used separately after being dismantled. Its a great choice for the elder,watchmakers,electricians, modelers,hobbyists,crafts workers and dentists.Widely Application- This lighted head magnifier is suitable for reading of the elderly, jewelry appraisal, watch repairing, crafting, painting, sewing, knitting, nail art, eyelash, engraving, art or collection inspection, electronic device, mechanical,etc..