Obvious through the caseback, the oscillating mass on the movement is delicately engraved. It truly is produced from eighteen-karat gold and decorated by hand with a barley grain pattern, completed by guilloche The Diver 300M is obtainable in steel or mixtures of metal and yellow or Sedna gold, using a https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/