What is the difference between an automatic and mechanical watch?

January 12, 2025

Time to read 5 min

What is the difference between an automatic watch and a mechanical watch?

Mechanical and automatic watches are marvels of horological engineering that appeal to fans of traditional timepieces. However, these terms can be confusing for many consumers. While they share similarities in how they work, they differ in how they are wound and how they are used. Here is a detailed guide to understanding these two types of watches.

1. What is a mechanical watch?

A mechanical watch is a traditional timepiece that operates without a battery or electronic energy source. It is powered by a complex mechanism composed of cogwheels, springs, and gears.

Main features:

Manual movement : A mechanical watch must be wound regularly using the crown to keep it running. This process winds the mainspring, which then releases its energy to power the mechanism.
Artisanal precision : Mechanical watches are often made by hand, which reflects exceptional watchmaking know-how.
Power Reserve : Typically, most mechanical watches have a power reserve of 24 to 48 hours. This means that they need to be wound every day or every other day.

2. What is an automatic watch?

An automatic watch, also called a self-winding watch, is a specific type of mechanical watch. It uses the natural movement of the wrist to wind itself, eliminating the need for regular manual winding.

Main features:

Automatic mechanism : Thanks to a semi-circular rotor integrated into the movement, the watch captures the energy generated by the movements of the wrist. This rotor turns and winds the mainspring automatically.
Manual winding possible : Most automatic watches also allow manual winding via the crown, providing an additional option if they are not worn regularly.
Power reserve : Similar to mechanical watches, with an autonomy often between 40 and 70 hours depending on the model.

3. The key differences between a mechanical watch and an automatic watch

Criteria	Mechanical watch	Automatic watch

Reassembly

Manual only (via crown)

Automatic (wrist movements) and manual possible

Practicality

Requires regular reassembly

Practical for everyday use

Complexity of the mechanism

Simpler in its construction

Includes rotor for automatic winding

Recommended use

Ideal for lovers of tradition and simplicity

Ideal for those who wear their watch every day

Cost

Often more affordable than automatic watches

Often more expensive due to the complexity of the mechanism

4. Advantages and disadvantages

Mechanical watch:

Benefits :

Reflects traditional watchmaking know-how.
Often thinner and more refined design thanks to a simpler mechanism.
Less expensive than automatic watches in some ranges.

Disadvantages:

Requires regular manual winding.
Less practical for everyday use, especially for those who forget to wind their watch.

Automatic watch:

Benefits :

Automatically winds up when worn, providing greater convenience.
Ideal for lovers of mechanical watches but looking for simplified maintenance.
Advanced technology combining tradition and innovation.

Disadvantages:

May stop if not worn for several days (requiring manual winding or use of a watch winder).
Often more expensive due to the complexity of the mechanism.

5. How to choose between a mechanical watch and an automatic watch?

The choice mainly depends on your preferences and lifestyle:

If you like authenticity and the ritual of winding , a classic mechanical watch is ideal.
If you are looking for a functional and practical watch for everyday use , opt for an automatic watch.
If you own multiple watches : A mechanical watch can be a good addition if you already have automatic models.

Conclusion

The main difference between a mechanical watch and an automatic watch is their winding method. While the mechanical watch requires regular manual winding, the automatic watch uses the movements of the wrist to wind itself. Both types embody watchmaking expertise and offer a unique experience to their owners.

Whether you choose a mechanical or automatic watch, you are investing in a timeless piece that reflects tradition, elegance and precision.

👉 Want to explore more models? Discover our selection of the best mechanical and automatic watches to find the one that suits your style and needs.

FAQ

What is a watch winder used for?

An automatic watch winder is designed to keep the internal mechanism of your watches moving when you are not wearing them. It simulates the natural movements of the wrist to:

Maintain accuracy : Prevent your watch from stopping, ensuring constant adjustment of the time, date and complications (moon phase, calendar, etc.).
Protect the mechanism : Ensure uniform distribution of internal lubricants, thus reducing wear on components.
Simplify use : Eliminate the need to manually wind your watches after a period of inactivity.

The winder is therefore an essential tool for lovers and collectors of automatic watches.

How to maintain a winder?

To ensure the durability and performance of your winder, it is important to maintain it regularly:

Cleaning : Wipe the exterior surface with a soft, dry cloth to remove dust. Avoid chemicals that may damage materials such as leather or wood.
Protection against humidity : Place the winder in a dry place away from sources of humidity to avoid any risk of deterioration.
Checking the power supply : If your winder is battery operated, replace them regularly to avoid malfunction. If the power supply is mains, check that the cable is in good condition.
Engine Maintenance : Although modern engines are built to last, it is recommended that you consult a professional if you notice a drop in performance or unusual noises.

Simple but regular maintenance will keep your winder operating efficiently for years.

Which watch winders are suitable for all watches?

Most modern watch winders are designed to be compatible with a wide range of automatic watches. However, here are a few things to check to ensure universal compatibility:

Rotation Types : Make sure the winder offers all three rotation modes (clockwise, counterclockwise, bi-directional) to accommodate the specific requirements of each caliber.
Rotation Cycles (TPD) : Choose a winder with adjustable cycles (600 to 1500 revolutions per day), which covers the majority of automatic watches.
Adjustable Stand : An adjustable cushion stand ensures that the winder can accommodate watches of varying sizes and weights.
Anti-magnetic protection : Prevents any interference with the internal components of your watches.

At My Watch Accessories , our watch winders are designed to fit all automatic watches, from the simplest to the most complex.

Do watch winders damage automatic watches?

No, a quality winder will not damage your watches. On the contrary, it helps maintain them by keeping the mechanism active and the lubricants distributed. However, it is important to:

Use a winder that meets the technical specifications of your watches (adapted rotations and cycles).
Do not overuse the winder if you do not wear certain watches for long periods of time, to avoid unnecessary wear.

A properly adjusted winder, used sparingly, will extend the life of your watches.

Is a winder necessary if I only have one automatic watch?

If you wear your automatic watch daily, a winder may not be essential. However, it becomes useful if:

You regularly switch between several watches.
Your watch has complex complications, such as a perpetual calendar, which require laborious adjustments after each stop.
You want to preserve the accuracy and durability of your watch even when it is not being worn.

A watch winder is particularly recommended for collectors, but it remains a practical solution for anyone who owns an automatic watch.