The polished blue bi-directional rotating bezel is compelete using a vivid orange GMT scale and helium-escape valve at ten o'clock on the case. It involves the melting in the Uncooked material utilizing oxyhydrogen flame plus the crystallisation on the melted droplets to form a cylinder. Graded nine within the Mohs-hardness https://www.watchesworld.com/top-10-dive-watches/