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Plain-English answers to how automatic watches and winders actually work — the ownership questions people search for, answered without the jargon or the sales pitch.
You don’t need to understand a movement to enjoy a watch — but a little knowledge saves you money and stops you buying the wrong thing. These guides answer the ownership questions people actually search for, in plain English, with no jargon and no sales pitch: how an automatic keeps time with no battery, whether a winder is worth buying, and how many turns a day a watch actually needs.
Everything here is written to be checkable. Where we make a factual claim — an accuracy standard, how a mechanism works — we cite the maker or a published source, and where a figure isn’t published we say so rather than guessing. The guides also feed our buying pages: read the theory here, then let a roundup turn it into a shortlist.
Everything in Learn
Do Automatic Watches Need a Winder?
The honest answer: usually no. Here's exactly when a winder is worth it and when it isn't.
Is a Watch Winder Worth It?
What a winder does, the real arguments for and against, and who actually benefits from one.
How Automatic Watches Work
Rotor, mainspring, gear train, escapement — how a watch runs on your wrist with no battery, explained simply.
Watch Winder TPD Settings by Brand
Turns per day and direction explained, with a reference table of common movements and brands.
How to Wind an Automatic Watch
The right way to start a stopped automatic, how many turns it takes, and why you cannot overwind one.
Automatic vs Quartz Watches
Accuracy, cost, maintenance and feel — the honest comparison, including where a smartwatch fits.
Automatic Watch Accuracy Explained
What -35/+45 seconds a day actually means, what COSC certifies, and when your watch really is running badly.
Automatic Watch Movements Explained
In-house, NH35, Miyota, Swiss — what the caliber name on a spec sheet tells you, and what it doesn't.
Are Cheap Automatic Watches Worth It?
Where the money goes between $50 and $500, and the exact points at which spending more stops paying you back.
How to Set an Automatic Watch
Time, date and day in the right order — and the one window of hours where changing the date can damage the movement.
Why Is My Automatic Watch Losing Time?
Work through it in order: power reserve, magnetism, position, then service. Most cases are the first two, and both are free to fix.
How Long Do Automatic Watches Last?
Decades, with servicing — and a straight answer on which parts wear, what actually kills a cheap automatic, and when repair stops being worth it.
Automatic Watch Service: What It Costs and When You Need It
What an overhaul actually involves, how often it's genuinely needed, and the price point at which servicing a watch stops making sense.
Watch Water Resistance Explained
30m does not mean 30 meters. What the depth markings actually permit, what ISO 6425 adds, and the one habit that ruins more watches than swimming does.
Do Watch Winders Damage Watches?
No, and the overwinding fear is mechanically impossible — but there is a real wear argument, and it is worth understanding before you buy.
How to Choose an Automatic Watch
The five decisions that actually matter - movement, size, crystal, water resistance and brand - in the order you should make them.
What Is Lume on a Watch?
Super-LumiNova, LumiBrite and the cheap stuff: how watch lume works, why it fades by morning, and how to charge it properly.
How to Store Automatic Watches
Stopped, wound or on a winder - what actually happens to a mechanical watch in storage, and the three mistakes that cost money.
How to Demagnetize a Watch
Magnetism is the most common reason a healthy automatic suddenly runs minutes fast. How to confirm it, and how to fix it.
Automatic Watch Power Reserve Explained
What the hours figure means, why your watch rarely reaches it, and how long an automatic really runs after you take it off.
Watch Size Guide: What Case Size Actually Fits You
Case diameter is the number everyone quotes and the wrong one to buy on. Lug-to-lug and thickness decide the fit.
How to Resize a Watch Bracelet
Removing links from a steel bracelet at home: pin types, which side to push from, and how to get the half-link balance right.
Who Actually Makes Automatic Watch Movements
Seiko, Miyota, ETA, Sellita, Sea-Gull and Hangzhou supply most of the industry. Which caliber is in your watch, and what it means.
What Does Hacking Mean on a Watch?
The two spec-sheet words that change how a watch feels to own. What each one does, and which movements have them.
Where to start
If you’re new to mechanical watches, begin with how automatic watches work — it explains the rotor, mainspring and escapement in a couple of minutes and makes every spec table on the site easier to read. If you already own an automatic and you’re wondering about a winder, start with do automatic watches need a winder?The honest answer for most people is “not yet,” and it’s worth knowing why before you spend anything.
Ready to buy a winder anyway? The TPD settings guideis the reference you’ll come back to — turns per day and direction, with a table by movement and brand, so you can set a winder correctly instead of hoping a preset is close.