Like All Rolex watches, the Oyster Perpetual Datejust 31 is covered by the Superlative Chronometer certification redefined by Rolex in 2015. This designation testifies that every watch leaving the brand’s workshops has effectively undergone a series of tests performed by Rolex in its have laboratories according to its have requirements, https://www.watchesworld.com/11-of-the-best-womens-watches/