By Jovan Krstevski
As a Salon International de la Haute Horlogerie 2014 preview, Audemars Piguet is now presenting the Royal Oak Concept GMT Tourbillon in titanium and white ceramic.
The new Royal Oak Concept GMT Tourbillon features a white ceramic bezel, crown and push piece sin contrast with the titanium case middle. Ceramic is also incorporated into the movement itself as it is used for the hourglass-shaped upper bridge of Calibre 2913.
The Royal Oak Concept GMT Tourbillon’s hand-wound Calibre 2930 features a twin barrel delivering 237 hours – or nearly 10 days – of power reserve.
The balance wheel beats at 21,600 vph and rotates inside the tourbillon carriage every 60 seconds. The tourbillon cage comprises 85 components for a total weight of just 0.45g.
The GMT display at 3 o’clock provides an instant reading of the time in a second time-zone and can be adjusted by pressing the push piece at 4 o’clock. The indication of the second time-zone, based on 12 hours, uses two discs. The first, on which the figures are inscribed, completes one turn in 12 hours. The second, just below, completes a turn in 24 hours and has 2 coloured areas: a white half for daytime and a black half for night-time.
The Royal Oak Concept GMT Tourbillon also features a selection indicator mechanism. According to the position of the winding stem, the hand positioned on the dial at 6 o’clock indicates the function selected. The H, N and R indications correspond to the three positions of the winding stem, meaning time-setting, neutral and winding respectively.
Jovan Krstevski – Founder, Proprietor & Executive Editor
Watch collector, aficionado and a Event profile in the Swedish nightlife. He launched Watchgeek back in 2011, which is now known as WristReview. He quotes ’WristReview is a site to help people find, explore, discover and enjoy wristwatches.’ His passion jump started in his early teens, when he was given his first mid-range wristwatch which was an Omega Seamaster. Since then he has always been in love with wristwatches!