This is a full metal model with a simple and sophisticated image. The bridge is positioned slightly below the lens center, and the fit balance is achieved to match the Japanese skeleton. The lightweight and spring-resistant beta-type titanium alloy temples have been pressed to improve the spring for a supple fit. In addition, the Ichi Sparta processing of hinge shaving, including yoli, has a unified design and strength in mind. Surface treatment is made of durable gold direct plating and IP plating.