Glossary
Vibration
Movement of the pendulum or other oscillating element in a watch movement, limited by two consecutive
extreme positions. The balance of a mechanical watch generally makes five or six vibrations per second
(i.e. 18,000 or 21,600 per hour), but that of a high-frequency watch may make seven, eight or even ten
vibrations per second (i.e. 25,200, 28,800 or 36,000 per hour).