Hublot Classic Fusion parent reference 550.NS.1800, grouping exact dot-configuration references 550.NS.1800.NS.3804.ORL22, 550.NS.1800.NS.ORL22, 550.NS.1800.RX.1604.ORL19, 550.NS.1800.RX.1804.ORL19, 550.NS.1800.RX.ORL19.