The color of the Rolex Yacht-master Blue Dial watch is Blue Dial, with 316 Grade Stainless Steel (Oyster) material. 40mm case. Rolex Yacht-master Blue Dial watch suitable for Men belongs to automatic mechanical watch series. Rolex Yacht-master 16628 40mm Case Mechanical established a leadership position in the table. The Replica Watches gathering represents the eternal watchmaking process. Rolex Yacht-master 16628 40mm Case Mechanical (Automatic) Movement meets the professional diver’s ultimate demand for ruggedness, precision, and reliability.