● Adopts a “high -precision aspherical lens” that suppresses the distortion of the image around the lens. ● Hard coat processing that is hard to scratch. ● Design that pursues a sense of stability when you have it. ● A grip that is easy to grasp and slips using rubber material. ● Adopts a eccentric structure that secures the view at hand. ● Two colors (red, blue) that can be selected according to your preference- Color Blue Lens effective diameter (mm) 60 refraction power (Diopta) 10 Reference magnification (double) 2.5 lens material Acrylic (PMMA) lens lens shape double convex spherical lens Coating surface curing coating Size (long x width x thickness) 190 × 71 × 15 (mm) mass (weight) 65 (g) Legal Related Confirmation Date 20121018 * The ratio of reference magnification is the magnification when you can see it at a specific distance (about 250mm).