How to wind a Seiko automatic watch?
Seiko automatic watches are recognized for reliability, craftsmanship and great value. Unlike quartz watches, automatic watches do not run on batteries but use your wrist’s motion to power the movement. However, if your watch has stopped after not wearing it for a few days, you’ll need to wind it before wearing it again.
Many new owners are concerned about winding their automatic watch in the wrong direction. Fortunately, it’s an easy process that takes only a minute or two.
In this guide, we’ll explain how to wind a Seiko automatic watch, the models that can be wound manually, and best practices to keep your watch running well.
Searching for the best models? See our Best Seiko Automatic Watches Under $500 USA guide.
What is hand winding?
Manual winding: mainspring is wound manually (via the crown)
The energy that drives the watch is stored when the mainspring tightens.
Most of Seiko’s contemporary automatic movements are hand-wound capable, allowing you to start the watch without depending entirely on the motion of your wrist.
Do All Seiko Automatic Watches Need Manual Winding?
No
Not every movement has manual winding but every Seiko automatic watch can wind itself by the normal movement of the wrist.
Modern Seiko Movements Which Can Be Wound Manually
- 4R35
- 4R36
- 4R34
- 6R15
- 6R35
- 6R54
- 8L35
Previous Movements Not Wounded by Hand
Older movements, such the 7S26 and 7S36, don’t allow for hand winding. They start to run when they are gently shaken, or worn on the wrist.
If you’re not sure what movement your watch uses, always check your owner’s manual.
When Should You Wind Your Seiko Automatic Watch?
You might need to wind your watch if:
- It has ceased, left unworn.
- You are in there for the first time.
- It has exhausted its power reserve and run out of power.
- You want it completely charged before you wear it all day.
Seiko Automatic Watch Winding Instructions
Just follow these easy instructions.
Step 1: Don’t Touch the Crown
Do not pull off the crown.
The crown should be all the way in unless your watch has a screw-down crown.
If your model has a screw down crown (like on many dive watches) first unscrew the crown until it pops into the regular winding position.
Step 2: Rotate the Crown clockwise
Turn the crown clockwise (away from you when looking at the dial).
Rotate it slowly and smoothly.
Don’t push the crown.
Step 3: Wrap around 20-30 turns.
In the case of most modern Seiko autos:
20-30 turns clockwise enough to get the movement.
Shortly afterwards the second hand should start to move.
Enough power stored to run the watch while you put it on.
Step 4: Set Time and Date
As the movement starts:
Pull the crown to the desired setting.
Pick a time.
If necessary, set the date.
Push (or screw) the crown back in place.
Step 5: Putting on the Watch
Wear the watch and the rotor within will continue to wind the mainspring while you go about your normal arm movements.
The watch is powered by regular everyday use.
How often should you wind it up?
Most of Seiko’s automated movements:
- Usually 20-30 spins are enough to get the watch going.
- Not to overdo it.
In modern Seiko automatic movements, there is a slipping clutch that helps prevent overwinding damage during routine manual winding.
Can You Overwind a Seiko Automatic Watch?
The answer for modern Seiko automatic movements is generally no.
The slip mechanism prevents the overstressing of the mainspring when it is fully wound.
That said, if you feel any unexpected resistance you don’t want to force the crown.
How long will it run when you wind it up?
Power reserve depends on the movement.
| Movement | Approximate Power Reserve |
| 4R36 | Around 41 hours |
| 6R35 | Around 70 hours |
| 6R15 | Around 50 hours |
The watch will stop if it is not worn before the power reserve is exhausted.
What To Do If Your Watch Doesn’t Start?
If your Seiko does not start running after winding:
- Make sure the crown is in the winding position.
- Wrap around 20-30 times.
- Wear it for a couple of hours.
- Slowly move the watch from side to side (do not shake vigorously).
- If it still won’t start, it may need service.
Do You Need To Wind It Every Day?
Not always.
If you wear your Seiko automatic watch for several hours a day, the rotor typically keeps it wound up enough.
The biggest advantage of hand-winding is if the watch has stopped.
Common Mistakes to Avoid
The Crown Is Upside Down
Always wind clockwise, unless otherwise specified in your owner’s manual.
Pulling Out the Crown First:
The crown is in the manual winding position (normal).
Compelling the Crown
If the crown is too tight, stop and check it out. Do not use too much force.
Selecting the Date in the Danger Zone
Between approximately 9:00 PM and 3:00 AM do not change the date because the date change mechanism may be engaged. Change the date, then set the time outside this range.
Not tightening the crown
If your watch has a screw down crown, screw down after the time is set to help maintain water resistance.
Tips for Keeping Your Seiko Automatic in Good Working Order
- Use it frequently.
- If it is stopped, wind it up before using.
- Do not expose yourself to strong magnetic fields.
- Avoid serious consequences.
- Occasional cleaning of case and bracelet.
- Have it serviced from time to time as recommended by Seiko or when performance deteriorates.
Manual Winding vs Wrist Movement
| Manual Winding | Automatic Winding |
| Uses the crown | Uses wrist motion |
| Good after the watch stops | Keeps the watch running during wear |
| Fast and convenient | Happens automatically |
Most owners use a combination of both.
Final Verdict
It is easy to wind a Seiko automatic watch and it takes less than a minute. For newer movements such as the 4R36 and 6R35, around 20–30 clockwise rotations of the crown are usually adequate to start the movement before wearing it.
Understanding the correct winding technique helps protect the movement, ensures accurate timekeeping, and allows you to enjoy your Seiko for many years.
Frequently Asked Questions
How many times should I wind a Seiko automatic watch?
About 20–30 clockwise turns is normally adequate to start most modern Seiko automatic movements.
Can I overwind a Seiko automatic watch?
Modern Seiko automatic movements feature a sliding clutch, making overwinding during normal manual winding uncommon.
Should I wind my Seiko every day?
No way! If you wear it regularly the movement of the wrist usually keeps it wound.
Why did my Seiko automatic stop?
It would probably be left unworn past its power reserve and its stored power would be used out.
Can I manually wind an older Seiko 7S26 movement?
No. The 7S26 lacks a hand-winding function and needs to be started by wrist movement.
