Like All Rolex watches, the Oyster Perpetual Datejust 31 is roofed through the Superlative Chronometer certification redefined by Rolex in 2015. This designation testifies that every watch leaving the brand’s workshops has efficiently been through a number of checks carried out by Rolex in its individual laboratories As outlined by https://www.watchesworld.com/11-of-the-best-womens-watches/