How to Wind an Automatic Watch

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Here is how to wind an automatic watch: unscrew the crown if it screws down, leave it in the first (winding) position, and turn it clockwise slowly. Rolex says at least 25 turns gives a stopped watch adequate partial winding. Then set the time, push or screw the crown back in, and wear the watch. Wrist motion takes over from there.

You can also wind it by gently swinging it side to side, or keep it topped up on a watch winder. And no, you cannot overwind it by turning the crown. Details, numbers and the mistakes to avoid are below.

Three ways to wind an automatic watch

Gentle side-to-side swinging also works to restart a stopped watch, as Seiko's instructions note, but it is slow compared with the crown.

How to wind an automatic watch with the crown

1. Take the watch off your wrist. Winding on the wrist puts sideways pressure on the crown stem.
2. Unscrew the crown if it is a screw-down type. Turn it counter-clockwise until it pops free. Rolex calls this position 1 on the Submariner, and the crown stays in this first position for winding. Seiko gives the same instruction: unlock a screw-down crown before operating it, and lock it afterward.
3. Do not pull it out. Pulling out to the next stop usually sets the date or time instead of winding. (Some models, such as the Rolex 1908, number their positions differently, so check your guide.)
4. Turn clockwise, slowly. Rolex and Seiko both say clockwise winds the watch and the other direction does nothing.
5. Count your turns. Rolex says a minimum of 25 turns is needed for adequate partial winding after a stop. Grand Seiko says its Caliber 9S61 is sufficiently wound after about 60 turns.
6. Check the seconds hand. Seiko notes that a fully stopped watch may not restart instantly, because the mainspring needs to build torque first. Keep winding until it runs.
7. Set the time and date. Pull the crown to the setting positions, set, then push it home. Our guide on how to set an automatic watch covers the safe order.
8. Screw the crown back down fully. Rolex stresses this to guarantee water resistance. Press gently while turning.

How many turns does a full wind take?

Makers publish different figures, and they do not always mean "full":

A practical approach: 25 to 40 turns gets most stopped automatics going with a useful reserve, and wearing the watch fills it the rest of the way. If you want a full wind without wearing it, use your manual's figure. On movements with long power reserves, a full wind takes more turns, because the mainspring is longer.

Can you overwind an automatic watch?

No, not by normal winding. In an automatic, the mainspring's outer end attaches to the barrel through a slipping bridle. Once the spring is fully wound, the bridle slips along the barrel wall instead of letting the spring tighten further. That protects the spring from the rotor, and from your crown.

Seiko is direct about it in its 4R instructions: turning the crown further will not break the spring. Grand Seiko's 9S64 and 9S63 instructions add that the crown keeps turning after full wind without damaging the watch, but ask owners to refrain from excessive operation.

So winding past full is harmless but pointless. It adds a little wear to the winding parts and nothing to the power reserve. The same logic applies to winders, which is why good ones rest between cycles. We cover that in are watch winders bad for watches?

How to wind an automatic watch without the crown

Some entry-level automatics cannot be hand-wound, and some owners just prefer not to use the crown. Two options:

1. Swing it gently. Hold the watch dial-up and rotate your wrist side to side in a slow arc. Seiko suggests this to restart a stopped watch. Stop once the seconds hand runs, then set the time and wear it.
2. Use a winder. A winder turns the watch at a set number of turns per day. It is not the fastest way to revive a dead watch, so give it a few crown turns first if your watch allows. Look up your movement in our watch winder settings table.

Wearing it: how much is enough?

Wrist motion alone keeps an automatic running only if you wear it long enough. Seiko recommends wearing its 4R watches for more than 10 hours a day, and winding them fully every day at a fixed time if they are not worn. It also warns that an under-wound watch may gain or lose time.

Desk days are the usual problem. If your watch stops overnight after a day at a keyboard, wind 20 to 30 turns each morning. See how much reserve you are working with in our automatic watch power reserve guide.

How do you know it is fully wound?

On an automatic, there is no hard stop. The slipping bridle lets the crown keep turning once the spring is full, so you cannot feel the end the way you can on a manual-wind watch (see how to wind a pocket watch for that kind). Three practical ways to judge it:

1. Use the maker's turn count. Grand Seiko's "about 60 turns" for the 9S61 and Tissot's "about 80 turns" for most automatics are good full-wind guides.
2. Check the power-reserve indicator, if your watch has one. Grand Seiko's Spring Drive 9R65, for example, shows the remaining reserve on the dial.
3. Do not worry about precision. A partial wind followed by a day on the wrist ends up in the same place. The goal is to get the watch running with enough reserve, not to hit an exact number.

Winding a watch that has been in storage

A watch that has sat in a drawer for months needs a little more care.

1. Wind it fully by hand, using the maker's turn count, rather than relying on wrist motion to restart it.
2. Let it run for a day before judging accuracy. Seiko notes that a fully run-down watch takes time to build enough torque, and timekeeping settles once the spring is in its middle range.
3. Set the date outside the danger window, as your manual specifies.
4. Check that the crown seals. After screwing it down, make sure it sits flush. If the watch has not been serviced in years, have its water resistance tested before swimming.

If a watch will not start after a full wind, or runs badly after a day, it may simply need servicing. Old oils thicken over time, and Rolex points out that its accuracy depends on lubricants that minimize friction and wear.

Screw-down vs push-pull crowns

Dive and sport watches usually have screw-down crowns. You must unscrew them before winding, and screw them back in afterward to restore water resistance. Rolex and Seiko both call this out in their instructions.

Dress and field watches usually have push-pull crowns, which you can wind without unscrewing anything. On most, the winding position is the crown pushed fully in, but numbering varies: Tissot's manuals call the winding position "position I", and Rolex's 1908 guide numbers its positions differently from the Submariner's. Tissot's manuals also cover the screw-down case: unscrew the crown first, and screw it back in after every operation to maintain water resistance.

Common mistakes

• Winding on the wrist. It strains the crown stem. Take the watch off.
• Forgetting to screw the crown back down. An unscrewed crown compromises water resistance.
• Pulling the crown out to wind. On most automatics, the winding position is the first one, before any pull.
• Winding counter-clockwise. It does nothing on the Rolex and Seiko movements we checked.
• Forcing the crown. If it binds or grinds, stop and have it checked.
• Setting the date late at night. On many calendar watches, changing the date while the date mechanism is engaged can strain it. Your manual gives the safe window.
• Blaming the watch for stopping on the nightstand. It may simply never have reached full wind.

FAQ

Let a winder do it

If you rotate several automatics, a winder saves you the daily crown routine and the time-and-date reset. Our best watch winders guide compares picks on turns-per-day range, direction settings and power. For a simple single winder with a power-reserve rest window: