Audemars Piguet caliber 5133
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Audemars Piguet caliber 5133 is one of the worlds thinnest self-winding movements with perpetual calendar.
To reach this remarkable thinness, the movement's perpetual calendar functions, normally on three different levels, have been re-arranged and merged into one single layer of no more than 0.35mm in thickness. Audemars Piguet developed two patented innovations: the end-of-the-month cam has been integrated to the date wheel, while the month cam has been combined to the month wheel. This movement consists of 256 parts.