Minute Repeater Watches
The minute repeater is one of the three "grand complications" of horology, alongside the perpetual calendar and tourbillon. A slide on the side of the case activates hammers that chime the hours, quarters, and minutes audibly. Patek's 6301P Grande Sonnerie sits at the apex; the 5980P, 5074P, and AP Supersonnerie are the modern catalog flagships.