If you're comparing automatic watch specifications, you may encounter the terms "hacking seconds," "hacking movement," or "stop seconds."
But what is hacking seconds on a watch?
Hacking seconds is a movement feature that allows the seconds hand to stop when the crown is moved into the appropriate time-setting position.
This makes precise time synchronization much easier.
What Does Hacking Mean on a Watch?
In watch terminology, hacking generally refers to stopping the seconds hand while setting the time.
On a hacking movement, pulling the crown into the appropriate setting position causes the seconds hand to stop.
You can then synchronize the watch more precisely with a reference time.
Why Is Hacking Seconds Useful?
Imagine your automatic watch is 30 seconds ahead.
Without hacking, the seconds hand continues moving while you're setting the hour and minute hands.
With hacking seconds, you can stop the seconds hand at a chosen point and restart the watch in synchronization with your reference.
How Do You Use Hacking Seconds?
The exact procedure depends on the movement.
Generally:
- access the appropriate crown position,
- move the crown to the time-setting position,
- observe whether the seconds hand stops,
- set the hour and minute hands,
- synchronize with a reliable reference,
- return the crown to its operating position.
Always follow the instructions for your exact watch.
Do All Automatic Watches Hack?
No.
Hacking capability depends on the movement.
Some automatic calibers include:
- hacking
- manual winding
Others may have one feature but not the other.
This is why movement specifications matter.
Hacking vs Hand Winding
These terms describe completely different features.
Hacking Seconds
Stops the seconds hand during time setting.
Hand Winding
Allows you to add energy to the mainspring by turning the crown.
A movement can support both features.
Does Hacking Make a Watch More Accurate?
Not directly.
Hacking doesn't improve the inherent rate accuracy of the movement.
Instead, it allows you to set the watch more precisely.
The watch can still gain or lose time afterward according to its mechanical accuracy.
Why Would a Movement Not Have Hacking?
Mechanical movement designs vary.
Some older or simpler calibers may not incorporate a stop-seconds mechanism.
That doesn't automatically mean they're unreliable.
What Is a Non-Hacking Watch?
A non-hacking watch continues operating while the time is being adjusted.
For everyday users, this may not be a major inconvenience.
For someone who enjoys precisely synchronizing watches, hacking can be a useful feature.
Is Hacking Important for a First Automatic Watch?
It's a nice feature to have.
For beginners, a movement offering both hacking and hand winding can provide convenient everyday operation.
However, it shouldn't be the only factor determining your purchase.
What Else Should You Look for in an Automatic Movement?
Consider:
- reliability
- power reserve
- accuracy specification
- automatic winding
- manual winding
- hacking
- servicing availability
Movement selection should be based on the complete package.
Hacking Seconds vs Quartz Accuracy
Even if you perfectly synchronize an automatic watch using hacking seconds, ordinary mechanical movements generally won't maintain quartz-level accuracy indefinitely.
Hacking improves synchronization—not the movement's fundamental precision.
Why Do Watch Enthusiasts Like Hacking?
It provides greater control over time setting.
Mechanical-watch enthusiasts often enjoy monitoring their watches in seconds per day.
Being able to start from a precise reference point makes that much easier.
Specht & Sohne Automatic Movements
Different Specht & Sohne automatic watches can use different calibers.
Check each model's movement specifications to determine whether features such as hacking and manual winding are included.
Final Thoughts
Hacking seconds is a simple but useful automatic-watch feature.
It allows you to stop the seconds hand while setting the watch, making accurate synchronization much easier.
For buyers comparing automatic movements, hacking + manual winding + practical power reserve can form an attractive everyday feature set.