Audemars Piguet 5134

The Caliber 5134 is an extra-thin perpetual calendar movement based on the legendary Caliber 2120. It features 374 total components and a suspended barrel. The oscillating weight is guided by a peripheral ring rolling on four ruby runners, reducing friction and wear to a minimum. The moon phase indicator is laser microstructured and laid on an aventurine base, requiring correction only every 125 years and 317 days. Functions include perpetual calendar with date, weekday, month, leap year, week number, and moon phase. This movement was discontinued in 2024, to be replaced by the Caliber 7138.