Armando-G explains the singularities of each of the parts of an automatic watch

 Before delving into what the parts of an automatic watch are, it is important to identify which watches can be considered of this type. An automatic watch is one that works with the movement of our arm. 

Automatic watches have various parts including a rotor that is activated by the movement of the wrist and, in turn, winds the mainspring of the watch.

Accordingly, when the position of the wrist changes or sudden movements are made, the rotor of the movement rotates and charges the watch through a gear.

 Parts of an automatic watch

Automatic watches: a unique mechanism

The spring is a kind of spring that, when the watch is wound, winds up to a maximum stop, and as it unwinds, it provides movement to the hands. As the spring cannot be wound infinitely, automatic watches have a mechanism that causes the rotor to disengage and stop winding it when it reaches the stop.

An automatic watch is a mechanical watch that was first marketed in the early decades of the 20th century. It works automatically when worn on the wrist, eliminating the need for manual winding. However, if it has not been worn for a period of time, the watch will stop working and will require manual winding.

History of wristwatches

As you can see, automatic watches are charged just by using them. However, when they are no longer used, the watch will most likely stop and that is where it is important to give it a little wind to start it.


 Parts of an automatic watch

The operation of an automatic watch step by step

  • The movement of the wrist turns the rotor which turns the spring. Turning the crown also creates the power coil.

  • A working gearbox transmits power to the exhaust.

  • The exhaust releases the energy in equal parts.

  • The flywheel uses this harmonic energy to oscillate from side to side at a constant speed. For a certain number of spans, the gear drives the force in a clockwise direction.

  • The clock ticks…

¿What are the parts of an automatic watch?

Now that you know what elements characterize automatic watches and how they work, at Armando-G we offer you a detailed list of the parts that make up these marvels.

  • Crown: The button on the side of the watch is used to set the time. It can also be turned to wind the watch. Mainspring The power source of the mechanism. The kinetic energy of the corona winding is transferred to a coil-shaped conductor, which stores energy as it rotates with increasing force.
  • Tires: They transmit stored energy from the electrical conductor to the scale through a series of small gears.
  • Steering wheel: The core of the mechanism receives energy from the scale. The pendulum or flywheel swings in a uniform circular motion five to ten times per second. A watchmaker can make the balance wheel spin faster or slower, which makes the watch run faster or slower.
  • Jewelry and sapphires: Synthetic sapphires are placed at points of intense friction, such as the center of a constantly moving gear. Used as bearings to reduce friction between metals and the resulting wear, they improve the efficiency and precision of the mechanism. Sapphire is used because it absorbs heat well and is very durable. A semicircular metal counterweight attached to the mechanism can freely rotate 360 ​​degrees as you move your wrist. 

    The rotor is connected by a series of gears to the main wire and thus to the main winding, which turns the clock. The rotor is equipped with a clutch that disengages when the power cord is fully charged.

 Parts of an automatic watch
Choose your first automatic watch

¿What care does an automatic watch need?

From Armando-G we recommend that you take into account how important it is to take care of automatic watches. Taking good care of the watch will guarantee its useful life and proper cleaning of the automatic watch is essential for its optimal operation. 

It is important that you keep these recommendations in mind:

  • Clean as often as possible.

  • Take care of the automatic watch from strong shocks and falls, it is transcendental for its useful life. The internal mechanism of automatic watches is especially sensitive due to the number of parts it contains and their millimetric arrangement inside the case, so a sudden blow can dislodge its interior. For this reason it is important to keep it in a good case like the ones found in Armando G.

  • Avoid exposing the watch to strong changes in temperature, such as in a sauna, and also to magnetism for a long time, as this can damage its mechanism.

  • Prevent the watch from stopping frequently by giving it small doses of movement or some winding if you don’t use it every day. 

  • When your watch stops and you want to start it again, it is recommended not to shake it, but to give it a little winding with the crown, to prevent it from slipping and hitting.

  • Although the majority of automatic watches resist water, before wetting it, it must be checked well, that the crown is well tightened to prevent water from entering the interior of the case.

  • Do not expose the watch to strong changes in temperature or to magnetism for a long time, as this can damage its mechanism.

  • Do a good external and internal maintenance every 5 or 6 years. It is very important that you leave this procedure in the hands of experts.

 Parts of an automatic watch

Store your automatic watches in the Armando-G displays

At Armando-G we have developed a range of displays for luxury automatic watches that have internal mechanisms that periodically wind the watch.

If you wish, you can also take a look at our extensive catalog of safes, ideal for storing valuable objects and jewellery.

Whenever you wish, you can contact us by calling +34 93 636 14 16 or by writing to us at

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