How a Watch Works

Your watch tells you the time, but how exactly does it function? How does it indicate the hour? These are fundamental questions for anyone interested in horology. In this section of our guide, you will find everything you need to know about the inner workings of a timepiece, whether mechanical or electronic. Indeed, one of the fundamental distinctions in understanding the operation of your timepiece is identifying the type of movement housed within. Is it a Quartz (electronic) or a mechanical movement? Let us now explore the heart of a watch to better understand its operation.

Basic Concepts

A watch is a time-measuring instrument designed, at minimum, to indicate the time. To achieve this, two primary technologies exist today: one utilizing a mechanical movement and the other operating via an electric current and Quartz. Certain movements may also be hybrid, leveraging the benefits of quartz to enhance the precision of a mechanical movement. However, regardless of the technology employed, the following elements are always required:

• an energy source
• a motor that transmits energy via gear trains (in most instances)
• an escapement mechanism that maintains and counts the transmitted oscillations
• a regulator that stabilizes the transmitted power over time to ensure the timepiece remains accurate
• a display to read the time, which may be analog with hands or digital

Most watches (whether quartz or mechanical) offer hour and minute functions, to which complications may be added; the most common include seconds, date, moon phase, and the chronograph.

Mechanical or Electronic?

For the past 50 to 60 years, the watchmaking world has been divided by a profound distinction between quartz watches and mechanical watches. But what are the primary differences, and why might one be preferred over the other?

Operation of a Mechanical Watch

This is the oldest type of caliber, having been in use for several centuries. Its principle follows the structure described above. Specifically, it utilizes a mechanical energy source—a coiled mainspring (the barrel) that gradually unwinds to drive the movement. To learn more, please visit this page.

Operation of a Quartz Watch

There are two major differences in a quartz watch compared to a mechanical model, found in the energy source and the regulator. Here, the energy source is a battery. The regulator is no longer mechanical; instead, it is a quartz oscillator that functions electronically. To learn more, please visit this page.

Other Components of a Watch

In addition to the movement, timepieces are composed of other elements, including:

• The case
• The dial
• The hands
• The strap