Dual polished and crystal acrylic lens with 5 magnification options, no distortion but high clarity. High brightness LED lights with adjustable dimmable switch, flexible to adjust the desired illumination brightness for better viewing effect. Suitable for examining and reading fine prints in newspapers, documents, maps, coins, stamps, electronic parts, jewellery, photos, and pill bottles, or repair work for clock, watch, cellphone & etc. Ideal gift for seniors, hobbyists and professionals, provide helpful visual impairment aid. Lens Magnification:2X 4X 6X 10X 22X(Use 2 Lens in One Time) The combined usage ratio is 2X, 2+4=6X, 2+6=8X, 2+10=12X, 2+22=24X Illumination Source:2 x LED Light Colour:Black Material:ABS+Acrylic lens Size:Expansion size 190x142x45mm, Folding size:142x45x40mm Package Contents: 1 * Headband magnifying glass(with 4 x CR1620 battery) 4 groups * lenses 1 * lens cleaning cloth(Colors and styles are random, no specifications are accepted) 1 * Lens storage box(Colors and styles are random, no specifications are accepted) 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.