What defines the reliability of an Audemars Piguet watch ?
Reliability is the probability of equipment running without any breakdown. In a mechanical watch, which is designed to run 24 hours a day, the balance which has a frequency of 21,600 vibrations per hour covers a distance of 678 metres per hour or 5,857 km per year, a considerable distance for a mobile part with a diameter or just 10 mm. This performance is made possible thanks to the use of ruby pallets with an average diameter of less than 1 mm, which reduce wear and friction. An oil sink is hollowed into these stones, into which the watchmaking place a drop of lubricant invisible to the naked eye.