SJX Watches
Explained: Audemars Piguet’s Revolutionary Perpetual Calendar Cal. 7138
Audemars Piguet kicks off its 150th anniversary in a big way with an all-new perpetual calendar movement, the Audemars Piguet Calibre 7138. Making its debut in both the Code 11.59 and Royal Oak, the cal. 7138 is a landmark in traditional perpetual calendars. In fact, the movement is perhaps the most sophisticated and user-friendly perpetual calendar from an establishment brand. The calendar relies on the classic “grand lever” mechanism that’s been reinvented in an ultra-thin manner, but more importantly, the cal. 7138 employs an ingenious and innovative setting mechanism. Consequently, it is impressively intuitive and also foolproof. All the calendar indications are set via the crown, and the movement can’t be broken by setting it at the wrong time. Together, these features mark the cal. 7138 out as one of the most notable perpetual calendar movements on the market today. The cal. 7138 debuts in the Code 11.59 (left) and Royal Oak. Image – Audemars Piguet Initial thoughts The perpetual calendar has long been a key part of the history of Audemars Piguet (AP), especially after the bestselling ref. 5548 was launched in 1978. So a brand-new perpetual calendar for its 150th anniversary is fitting. At the same time, the calibre illustrates AP’s tremendous advances as a vertically integrated, industrial-haute horlogerie manufacture that has developed an splendid stable of in-house calibres in a relatively short period of time. The irony is that the cal. 7138 is almost...
