Audemars Piguet Royal Oak Perpetual Calendar Openworked Watch

Amazingly deep for a watch that's under 10mm thick, the new black ceramic variant of the Audemars Piguet Royal Oak Perpetual Calendar Openworked is sure to be highly sought-after. It's powered by the caliber 5135 movement, an openworked version of the 5134 found in prior references. Its 41mm case is made from solid brushed black ceramic and paired with a matching black ceramic bracelet. The transparent dial lets you peer into the movement's inner workings, while rose gold accents give the mostly black affair a sense of warmth.

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