Saturday, January 21, 2017

Audemars Piguet Royal Oak Perpetual Calendar - Black Ceramic Case & Bracelet, Slate Grey Dial (Ref. 26579CE.OO.1225CE.01)

In 1955, Audemars Piguet introduced a world first – a perpetual calendar wristwatch with the essential leap year indication, made in only 9 examples, all in 18 carat yellow gold.

Since then Audemars Piguet has launched many more perpetual calendar wristwatches, among which the latest 2016 Royal Oak Perpetual Calendar, combining yellow gold, the iconic Gérald Genta design and the ultra-classic complication in all of watchmaking.

Today, Audemars Piguet enriches its line of Royal Oak Perpetual Calendars with a full black version, made of hand-finished black ceramic. Day, date, month, astronomical moon, week of the year displayed on the dial’s outer chapter ring and the essential leap year indication hold pride of place on the “Grande Tapisserie” decorated dial. Housed in an assertively sized 41 mm case, the selfwinding watch’s larger calibre 5134 is fully visible through the glareproofed sapphire crystal caseback.
Challenging to master but virtually unscratchable, black ceramic withstands high temperatures and thermal shocks, and is consequently extremely resistant to ageing. Numerous operations demanding extreme patience and skill are required to achieve a uniform, compact and ultra-hard material that can then be machined and hand-finished.
The dial, with “Grande Tapisserie” pattern, is slate grey with black counters and displays a photo realistic astronomical moon that contrasts with all of the black components of the piece.

Technical details
Reference: 26579CE.OO.1225CE.01

Movement
Self winding- Calibre 5134
Total diameter: 29mm(12 3/4lignes)
Total thickness: 4.31mm
Number of jewels : 38   
Number of parts: 374
Minimal guaranteed power reserve:40h
Frequency of balance wheel (Hz):    2.75 (=19,800 vibrations /h)

Case
Black ceramic case
Glare-proofed sapphire crystal and caseback
Water-resistant to 20 m

Dial
Slate grey dial with “Grande Tapisserie” pattern, black counters,  white gold applied hour-markers and Royal Oak hands with luminescent coating, black inner bezel

Functions
Perpetual calendar with week indication, day, date, astronomical moon, month, leap year, hours and minutes

Bracelet
Black ceramic bracelet with titanium AP folding clasp

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