An automatic watch is a small mechanical marvel: it needs no battery, winds itself with the natural motion of your wrist, and — with a little care — can run for decades. In this guide we answer the questions watch buyers ask most: what an automatic watch actually is, how it works, how it compares to quartz, and how to set, wind and care for one.
What is an automatic watch?
An automatic (or "self-winding") watch is a mechanical watch that winds itself as you wear it. Inside the case, a weighted half-circle called the rotor swings every time your wrist moves. That swinging motion tightens the mainspring — the coiled spring that stores the energy which powers the watch. No battery, no charging cable: your own movement is the power source.
This is why automatic watches fascinate collectors. Turn one over (or look through an open-heart dial) and you can watch dozens of tiny gears, springs and jewels working together in real time.
How does an automatic movement work?
The chain of events is beautifully simple:
- Your wrist moves — walking, typing, gesturing.
- The rotor spins around its axis and winds the mainspring.
- The mainspring releases energy slowly through a series of gears.
- The escapement and balance wheel divide that energy into precise, equal beats — the familiar smooth sweep of the seconds hand.
A fully wound automatic typically stores 36 to 42 hours of power reserve, so it keeps running overnight and through a lazy weekend morning.
Automatic vs quartz: which is right for you?
A quartz watch runs on a battery and an electronic circuit — extremely accurate, low-maintenance and affordable. An automatic watch runs on pure mechanics — richer character, a sweeping seconds hand, no battery changes, and the satisfaction of wearing genuine craftsmanship.
There is no wrong answer: many enthusiasts own both. Choose quartz for grab-and-go precision; choose automatic when you want a watch with a soul — one that literally lives on your wrist.
How to set and wind an automatic watch
- First wind: if the watch has stopped, unscrew/pull the crown gently to its first position and turn it clockwise 20–30 times. This gives the mainspring a base charge.
- Set the time: pull the crown out one more step and turn until the hands show the correct time. Avoid setting the date between 9 p.m. and 3 a.m. on models with a calendar — the date mechanism is engaged in that window.
- Push the crown back fully (and screw it down if applicable) to keep the case sealed.
- Wear it: a normal day on the wrist keeps an automatic fully wound.
How to care for an automatic watch
- Wear it regularly — motion is its fuel. If it stops after sitting unworn, a quick wind restarts it; no harm done.
- Keep it away from strong magnets (speakers, magnetic phone cases), which can affect accuracy.
- Mind water resistance — check your model's rating before swimming or showering.
- Service it every 4–6 years, like an oil change for a fine machine.
Frequently asked questions
Does an automatic watch need a battery?
No. It is powered entirely by the mainspring, which your wrist motion keeps wound.
How long does an automatic watch run when I take it off?
Most models run 36–42 hours off the wrist. After that they simply stop — wind and reset, and they are good to go.
Is an automatic watch accurate?
A healthy automatic movement typically keeps time within a few seconds to about half a minute per day — part of the charm of a living machine, and easily corrected when you set it.
Are automatic watches expensive?
They don't have to be. RMS Zeitmeister brings German-designed automatic watches to an accessible price point, with free shipping across Türkiye, free international shipping on orders over $300 and 6 interest-free installments.
Explore German-designed automatic watches
Ready to feel a mechanical heart on your wrist? Discover the RMS Zeitmeister Automatic Watches collection — open-heart and classic designs, engineered with German precision. Free shipping across Türkiye (and free worldwide on orders over $300), 6 interest-free installments and an international warranty on every model.
