Akoni Hera Sunglasses combine a titanium square-aviator silhouette with enamel-encircled metal rims for a retro-futuristic navigator look, handmade in Japan with precision components. Key attributes: Black | Black iron | Titanium, acetate | 4-base high-contrast CR-39 lenses | Anti-reflective coating | Adjustable temple system with tube screws | Japanese acetate temples with branded titanium tips | Ceramic nose pads with beta-titanium arms | Square aviator silhouette | Enamel-encircled metal rim and side cups | Retro-futuristic navigator styling | Dimensions & fit: Eye 56 mm | Bridge 16 mm | Temple 147 mm | Composition & care: Titanium | Acetate | CR-39 lenses | Ceramic nose pads | Beta-titanium arms | Wipe lenses with a microfiber cloth and store in the protective case. Avoid contact with solvents and prolonged exposure to extreme heat.