Swiss 7750 Valjoux SIHH 2017: Introducing the Audemars Piguet Royal Oak Perpetual Calendar in Black Ceramic, Case and Bracelet Replica Watches Young Professional
The black satin-brushed dial is partly skeletonized to show the inner workings of this watch. But as they're rather chunky, telling the time isn't overly hard, but legibility is not ideal. That
The black satin-brushed dial is partly skeletonized to show the inner workings of this watch. But as they’re rather chunky, telling the time isn’t overly hard, but legibility is not ideal. That being said, this is not actually a bit where the hands are the focus. The running seconds hand to your chronograph is bright yellow to provide contrast against the black dial.Finally, the individual moment markers and the mark to the 30-minute chronograph in 3 o’clock are rendered in yellow and white to provide maximum contrast and legibility. The 30-minute counter at 3 o’clock can be unique because it shows the elapsed minutes with a retrograde index. And lastly, at six o’clock is that the tourbillon.The motion is where the magic all happens. It is obviously in-house, and it is the calibre 2937. And like most of high-end chronograph movements, it has a column-wheel and lateral clutch.What’s unusual about it, however, is its two gongs. Rather than mounting the gongs into the motion plate, they are attached to what Audemars Piguet calls for a “sound board” Essentially, it is a thin membrane made from a special copper alloy that covers the rear of the movement, held in place by screws, and also forming a water-tight seal. This clarifies how the Royal Oak Concept Supersonnerie Tourbillon Chronograph watch is able to get a water-resistance rating of 20 meters, which might not seem like much to a casual observer, but that could not be more incorrect. The 20 meters is in fact quite impressive considering the intricate construction of the watch.
While ceramic has been a favourite material at Audemars Piguet for the Royal Oak, it has not been used for a watch bracelet, until now. Just announced at SIHH 2017, the Royal Oak Perpetual Calendar is ceramic from end to end, with the case, bezel and every link of the bracelet in black ceramic.
The case is 41mm in diameter, just like the standard model, but the finishing of the case and bracelet takes significantly more time than for the steel or gold equivalent. While a steel model takes some six hours to machine, polish and put together, the ceramic version takes 30 hours.
To match the ceramic case, the dial is a dark grey with black sub-dials, decorated with the chequerboard grande tapisserie guilloche that’s synonymous with the Royal Oak.
Historically an important complication for Audemars Piguet, the ceramic perpetual calendar is powered by the calibre 5134, a movement based on the extra-thin calibre 2120/2121 found in the original Royal Oak of 1972.
In fact, the calibre 5134 is evolved from the calibre 2120/2802, the movement used for the 39mm Royal Oak perpetual calendar that was in production for some 30 years. The key difference in the new calibre being the addition of a 52 week indicator.
Price and availability
The Royal Oak Perpetual Calendar in black ceramic (ref. 26579CE.OO.1225CE.01) is priced at SFr85,000. It should be available in the second half of 2017.