Noticeable from the caseback, the oscillating mass in the motion is delicately engraved. It really is created from 18-karat gold and decorated by hand having a barley grain pattern, carried out by guilloche The Diver 300M is obtainable in metal or mixtures of steel and yellow or Sedna gold, with https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/