A 10X aplanatic, coated, glass lenses, 0.9'' (23 mm) in diameter, provides a distortion free image. The body is made of reinforced glass-fiber durable polyamide. The air tight body prevents dust, which produces scratches, from entering. Features: * 10 X Aplanatic pocket folding magnifier * Fiber glass case * Aplanatic, distortion free * Distortion free image * Glass lenses - no scratching