Short answer: an automatic watch winds itself from the movement of your wrist, a manual (hand-wound) watch is wound by hand through the crown, and a quartz watch runs on a battery and a vibrating crystal. Which is better, quartz or automatic? Quartz is more accurate and cheaper; mechanical watches (automatic or manual) are prized for their craftsmanship and their lifespan.
Automatic vs quartz vs manual: the differences at a glance
| Automatic | Manual | Quartz | |
|---|---|---|---|
| Power source | Mainspring wound by a rotor | Mainspring wound by hand | Battery |
| Typical accuracy | Roughly -10 to +15 seconds a day, better for certified watches | Comparable to automatic | About ±15 seconds a month |
| When not worn | Stops once its power reserve runs out | Stops once its power reserve runs out | Keeps running until the battery dies |
| Maintenance | Service every 5 to 10 years depending on the brand | Service every 5 to 10 years depending on the brand | Battery change every 2 to 5 years |
| Seconds hand | Smooth sweep | Smooth sweep | Ticks once per second |
| Watch winder useful? | Yes, depending on the complications | No | No |
How does an automatic watch work?
A rotor, a half-moon-shaped weight, pivots with the slightest movement and winds the mainspring in the barrel. Worn regularly, the watch never stops. Left on a shelf, it stops once its power reserve runs out, often after 38 to 80 hours. See Automatic watch power reserve.
Automatic vs manual watch: what changes?
A manual watch has no rotor: you wind it by turning the crown, ideally at the same time each day, until you feel resistance. Its movement can be thinner, which is why it is chosen for many very slim dress watches.
Quartz: accuracy and convenience
A battery makes a quartz crystal vibrate at a very stable frequency, which delivers excellent accuracy at low cost. Less prestigious among enthusiasts, it remains the most practical choice for everyday wear.
How to tell which type of watch you have
- The seconds hand jumps once a second: quartz, in the vast majority of cases.
- It glides, and the watch starts again when you gently shake it: automatic.
- It glides, but only restarts when you turn the crown: manual.
If yours is an automatic you do not wear every day, a watch winder can keep it running; for manual and quartz watches, a watch box is all you need.
FAQ
Can you wind an automatic watch by hand?
Most, yes, using the crown. A few models do not allow it.
Which is more reliable, quartz or automatic?
Quartz for everyday accuracy, mechanical for lifespan: well looked after, a mechanical watch can be passed down through several generations.
Does a manual watch need a watch winder?
No: a winder works through the rotor, which manual watches do not have.