Size (mm): 20 x 22, Total length (L; mm): 280, Width of glasses part (Small d1 / Large d2; mm): 28.5 / 31.3, Thickness of glasses part (Small a1 / Large a2; mm): 13.5 / 14.5
Offset amount (small t1 / large t2; mm): 19/20, Weight (g): 223
An orthodox type with a 10° offset for the eyeglass section.
I-shaped body that combines lightness and rigidity.
It uses a matte finish plating that is non-slip even with oily hands.