Like All Rolex watches, the Oyster Perpetual Datejust 31 is roofed because of the Superlative Chronometer certification redefined by Rolex in 2015. This designation testifies that each watch leaving the manufacturer’s workshops has correctly been through a number of checks executed by Rolex in its own laboratories In accordance with https://www.watchesworld.com/11-of-the-best-womens-watches/