Description Features: 10/20/30X MAGNIFICATION with LED and UV Light, 21mm Lens Diameter, Triplet lens, Achromatic optical glass, Metal (Aluminum) body. ACHROMATIC LENS: limit the effects of chromatic and spherical aberration eliminating color degradation. TRIPLET LENS: 3 singles lens bonded together with excellent color sharpness and clarity. A magnifier designed for both hobbyists and professionals. APPLICATION: Great for jewelers, mechanics, machinists, stamp and coin collectors, arts crafts, photographers, hobbyists, watchmaker and other fields that require a micro view of the target object. Notice: Actual color may be slightly different from the image due to different monitor and light effect. Specification: Material: Aluminum, Copper, Optical Glass Expanded size: 88*28*24mm Folding size: 50*28*24mm 6 LED, 6 UV includes:1 x Magnifier