How to properly wind an automatic watch?
Why wind an automatic watch?
How an automatic watch works: rotor and wrist movement
An automatic watch works thanks to a rotor that turns with the movements of the wrist. This mechanism winds the barrel spring and supplies the watch with energy, thus ensuring its proper functioning without manual intervention.
Why manual winding may be necessary?
Although the rotor recharges the watch with energy, certain situations require manual winding:
- The watch stopped after a long period of not being worn.
- The user has a sedentary activity and does not move enough to ensure optimal reassembly.
- Some calibers require a little nudge initially to ensure good accuracy.
The essential steps for safe manual reassembly
Remove the watch to avoid any pressure on the winding stem
Before you begin, it is recommended to remove the watch from your wrist. This helps prevent excessive pressure on the winding stem, which could damage the mechanism.
Position the crown in neutral mode
The crown must be in the initial position (not pulled out). On models with a screw-down crown, it must first be unscrewed before reassembling.
Turn the crown clockwise
Turn the crown clockwise, usually 30 to 40 turns , to ensure complete winding. There is no point in rotating it counterclockwise, as this has no effect on the mainspring.
Do not force: how to recognize the end of reassembly?
Unlike hand-wound mechanical watches, an automatic watch does not lock when fully wound. However, it is advisable to stop turning the crown as soon as you feel any noticeable resistance to avoid premature wear of the mechanism.
Frequency and best practices
How often should you wind an automatic watch?
If worn daily, an automatic watch generally does not need to be manually wound. However, if it is left to rest for several days, manual winding may be necessary before putting it back on the wrist.
Should you wind an automatic watch every day?
This is not mandatory. A well-worn watch recharges itself. However, daily winding can be useful for those who have little physical activity or have a caliber requiring a limited power reserve.
Signs Your Watch Needs Winding
- A gradual delay in the time display.
- A watch that stops in the middle of the day.
- A reduced balance amplitude, visible on certain models with transparent back.
Mistakes to avoid
Winding a watch while still on the wrist
This bad habit can put lateral pressure on the winding stem and, in the long term, damage the internal mechanism.
Force the crown past resistance
If the crown seems hard or no longer turns normally, do not force it as this could damage the mainspring or the transmission system.
Forgetting to screw the crown back on a waterproof model
On a diving watch or any other waterproof model with a screw-down crown, it is imperative to screw the crown back in after reassembly to prevent any water infiltration.
Winding and power reserve duration
Explanation of power reserve time and variations according to calibers
The power reserve corresponds to the time during which a watch can operate after being fully wound. It varies according to the calibers and can range from 30 hours to several days for certain high-end models.
Quick comparison of the most common movements
- Seiko 4R35 / 6R35 : Approximately 40 to 70 hours of power reserve.
- Miyota 8215 / 9015 : Between 40 and 42 hours .
- ETA 2824-2 / Sellita SW200 : Around 38 to 42 hours .
Should I use an automatic winder?
Advantages and disadvantages of a winder
An automatic winder keeps a watch moving when it is not being worn, eliminating the need to manually wind it and set the time frequently. However, prolonged use can cause the gears to wear out more quickly.
What types of watches is a watch winder recommended for?
- Watches with complications (moon phase, perpetual calendar), because their adjustment is tedious.
- Collectors who alternate between multiple models and want to avoid having to adjust everything each time they use them.
