AP 2923

The Audemars Piguet caliber 2923 is a manual-winding chronograph that uniquely combines rattrapante and flyback complications, earning it the manufacturer's 'Laptimer' designation. Created at Michael Schumacher's request to measure a sequence of consecutive laps, it utilizes two overlapping central seconds hands. A third pusher stops one hand to record a time while instantly restarting the other, while the standard reset button enables flyback functionality for the active hand. Chronograph: Column wheel, Flyback, Rattrapante.