MASUNAGA is a Japanese eyewear brand with a rich heritage dating back to 1905. The company has shaped the country's eyewear industry and is known for its commitment to quality and craftsmanship. MASUNAGA produces eyeglasses that require more than 200 steps to complete, using only the finest materials such as hand-polished acetate, pure titanium, and precious metals. The brand is renowned for its intricate engravings and three-dimensional frames, and many international optical labels rely on MASUNAGA to manufacture their frames.