#Watches A completely new jewel shines about the floor of the sea: for the first time, the Yacht-Master 42 is out there in yellow gold – an inspired and unique refinement into the emblematic sailing timepiece that in no way alters its system. Oyster Perpetual Datejust 31 Further more to https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/