M2043 Sunglasses by Matsuda. Color: Beer Brown / Brown Gradient, Beer Brown / Sage Green, Size: 51-22-143/170. The M2043 sunglasses are a stylish and sophisticated eyewear option from the Japanese luxury eyewear brand, Matsuda. They feature a rectangular shape, with an acetate frame front and interchangeable titamium temples (traditional and cable). One of the most distinctive features of the M2043 is its intricate metalwork that adds a touch of visual interest to the design.