This is a preview of the Royal Oak Concept GMT Tourbillon that Audemars Piguet will officially unveil at SIHH 2014 in January. The original Royal Oak Concept was launched in 2002, and there have been a number of subsequent updates that followed. This year’s model features a white ceramic bezel, crown and pusher — with a titanium middle case. Additionally, white ceramic was incorporated into the upper bridge of the caliber 2913 movement — visible when you look at the dial. It is the white hourglass shaped component that runs from 12 to 6 o’clock.