● 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 Red Lens effective diameter (mm) 100 × 54 refraction power (Diopta) 4 Reference magnification (double) 1.5 lens material Acrylic (PMMA) lens lens shape double convex spherical lens Coating surface curing coating Size (long x width x thickness) 160 × 198 × 17 (mm) mass (weight) 109 (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).