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The verdict, up front: choose quartz if you want the most accurate, lowest-maintenance watch for the money. Choose automatic if you want a mechanical watch that runs on your own motion, has a smooth sweeping seconds hand and can be serviced for generations. Quartz wins on numbers. Automatic wins on craft.
The accuracy gap is large. Seiko rates many of its everyday quartz calibers at plus or minus 15 seconds per month. Mechanical movements are rated in seconds per day: the COSC chronometer standard, a demanding test, requires an average daily rate of -4 to +6 seconds.
Here is the full automatic vs quartz watch comparison, difference by difference.
Automatic vs quartz: side by side
| Automatic (mechanical) | Quartz | |
|---|---|---|
| Power source | Mainspring wound by a rotor as you move | Battery, or a solar or kinetic cell |
| Timekeeping element | Balance wheel and hairspring | Quartz crystal oscillator |
| Typical accuracy rating | Seconds per day (COSC chronometers: -4 to +6 s/day) | Seconds per month (many Seiko quartz: ±15 s/month; Grand Seiko 9F: ±10 s/year) |
| Runs when unworn | Until the power reserve runs out (about 40 to 80 hours on common movements) | Until the battery dies (years) |
| Seconds hand | Smooth sweep | Usually ticks once per second |
| Maintenance | Periodic service: disassembly, cleaning, lubrication | Battery changes, occasional seal and movement service |
| Sensitivity | Position, temperature, magnetism, shock | Much less sensitive |
| Price for a given finish | Higher | Lower |
| Works on a winder | Yes | No |
| Amazon | See options | See options |
How each one keeps time
Automatic
An automatic watch stores energy in a mainspring. A rotor swinging with your wrist winds the spring, and the energy is released through a gear train, an escapement and a balance wheel that oscillates at a fixed rate. Orient lists its F6724 caliber at 21,600 beats per hour, and Omega lists its 8800 at 3.5 Hz. Our guide to how automatic watches work walks through each stage.
Quartz
A quartz watch uses a battery to make a tiny quartz crystal vibrate. In most quartz watches, the crystal is cut to vibrate 32,768 times per second, a power of two that a circuit can halve down to exactly one pulse per second. Each pulse drives a small stepping motor that moves the hands. That is why most quartz seconds hands tick.
Seiko made this mainstream. Seiko says its Quartz Astron, released on Christmas Day 1969, was the world's first quartz wristwatch to be sold commercially, and its museum notes that the Astron's tuning-fork quartz resonator and open-type step motor remain standard in quartz watches today.
Difference 1: accuracy
This is not close. A frequency of 32,768 vibrations per second is far more stable than a balance wheel swinging a few times per second, and quartz is less affected by temperature, position and motion.
Published figures make the point:
| Movement | Type | Maker's accuracy rating |
|---|---|---|
| Grand Seiko 9F51 | Quartz | ±10 seconds per year |
| Seiko 7N01, 7C17, 8T63 | Quartz | ±15 seconds per month |
| COSC-certified chronometer | Mechanical | -4 to +6 seconds per day (average) |
Plenty of affordable automatics are rated looser than COSC. Retailer spec sheets for Seiko's 4R36, for example, list +45 to -35 seconds per day. In practice many run better than their rating, but even a good automatic usually drifts more in a week than a basic quartz does in a month.
Does that matter? For most people, a few seconds a day means setting the watch once a week or so. If you need to be precise to the second without thinking about it, quartz is the answer.
Difference 2: power and convenience
A quartz watch keeps running in a drawer for years. An automatic keeps running while you wear it, then stops once its power reserve runs out. Common reserves run from about 40 hours (Orient F6724) to about 70 hours (Rolex calibre 3230) and 80 hours (Tissot Powermatic 80, Hamilton H-10).
If you rotate several watches, that is the automatic's biggest daily annoyance: setting the time and date again after a few days off the wrist. A watch winder solves it for watches you want ready to go. Quartz needs nothing of the sort.
Difference 3: maintenance and lifespan
A quartz watch needs a new battery every few years. Seiko quotes about 3 years for its 7N01 and 8T63 calibers and about 5 years for its 7C17. Gaskets should be checked when the case is opened, especially if you swim with the watch.
A mechanical watch needs periodic servicing. Rolex explains that its timekeeping depends on lubricants that minimize friction and wear, and recommends periodic professional servicing, during which the movement is fully disassembled, inspected and lubricated. That costs more than a battery, but a serviced mechanical movement can keep running for decades, and parts can often be made or adapted.
Difference 4: feel, sound and the sweep
This is subjective, and it is why people still buy automatics. A mechanical seconds hand moves in several small steps per second, so it appears to glide. Through a display case back you can watch the balance wheel and rotor work. Many owners like knowing the watch runs on their own movement and nothing else.
Quartz offers different pleasures: thin cases, light weight, and complications such as perpetual calendars and chronographs at prices mechanical watches cannot touch.
Difference 5: durability
Quartz watches shrug off most daily abuse. Mechanical watches are more sensitive to shock and magnetism, although modern ones are much tougher than older ones. Tissot's Powermatic 80 uses a Nivachron balance spring, and Omega says its Master Chronometer calibre 8800 resists magnetic fields above 15,000 gauss. If you work around strong magnets or do contact sports with your watch on, quartz is the safer bet.
Difference 6: price
For the same case, crystal and finish, quartz is cheaper, because the movement is mass-produced electronics. Automatics start at an accessible level, though. The Seiko 5 Sports SRPD55, with Seiko's 4R36 automatic caliber, lists at a few hundred dollars on Seiko's US site. Our affordable automatic watches guide covers current models with published movement specs.
The middle ground: Spring Drive, solar and kinetic
The automatic vs quartz split is not quite binary. A few technologies sit between the two.
Spring Drive
Seiko's Spring Drive uses a mainspring, wound by a rotor like any automatic, but regulates it electronically with a quartz crystal instead of a balance wheel and escapement. The seconds hand glides without ticking. Grand Seiko lists its Spring Drive 9R65 at ±15 seconds per month (about ±1 second per day) with an approximately 72-hour power reserve and an on-dial power-reserve indicator. That is quartz-level accuracy with an automatic's winding. Orbita's winding database lists Spring Drive calibers without a turns-per-day figure, so check with Grand Seiko before putting one on a winder.
Solar quartz
Solar quartz watches, such as Citizen's Eco-Drive line, are quartz watches that recharge a cell from light rather than relying on a disposable battery. They keep the accuracy and convenience of quartz and cut out most battery changes. They are still quartz: no rotor, no mainspring, nothing for a winder to do. We compare them in detail in automatic vs solar watch.
Kinetic
Seiko's Kinetic watches use a rotor, like an automatic, but the rotor drives a tiny generator that charges a cell powering a quartz movement. They look like automatics from the back, which confuses buyers. Orbita cites Seiko USA technical service as not recommending winders for Kinetic movements, so treat them as quartz for storage purposes.
Cost of ownership, in plain terms
Price tags hide the long-term picture. A quartz watch is cheaper to buy and cheaper to run: a battery every few years and an occasional gasket check. An automatic costs more up front and needs a full service from time to time, which means disassembly, cleaning, new oils and new gaskets, as Rolex describes in its service guidance.
On the other side of the ledger, a well-kept mechanical watch from a major brand can be serviced for decades, and many collectors value that more than the running costs. If you want one watch for ten years and never want to think about it, quartz is the rational choice. If you want an object to keep, maintain and maybe pass on, the service bills are part of the deal.
Common myths
- "Automatics never need a battery, so they never need anything." They need periodic servicing instead.
- "Quartz watches are cheap watches." Grand Seiko's 9F quartz movements, rated at ±10 seconds per year, sit in luxury watches.
- "A ticking seconds hand means a cheap watch." It usually just means quartz, whatever the price.
- "An automatic will run forever on a winder." It will run as long as it is wound, but it still needs servicing on the maker's schedule.
- "Kinetic is automatic." Seiko Kinetic uses a rotor to charge a cell for a quartz movement, so it behaves like quartz.
Choose an automatic watch if…
- You love mechanical engineering and want to see it work.
- You wear the same watch most days, or will use a winder.
- You want a watch that can be serviced and handed down.
- A smooth sweeping seconds hand matters to you.
- You don't mind setting the time now and then.
Choose a quartz watch if…
- Accuracy matters more than mechanics.
- You want to pick up any watch from the drawer and have it show the right time.
- You want the thinnest, lightest case or the most features for the money.
- You prefer the lowest running costs.
- You are hard on watches.
Many collectors own both: an automatic for the pleasure of it and a quartz for travel, sport or reliability. There is also a third option, the manual-wind mechanical. We compare it in automatic vs mechanical (manual) watches.
FAQ
Is quartz better than automatic?
For accuracy, low cost and grab-and-go convenience, yes. Seiko rates many quartz calibers at plus or minus 15 seconds per month, far tighter than typical mechanical ratings. An automatic is better if you value mechanical craft, a sweeping seconds hand and a watch that never needs a battery.
Do automatic watches last longer than quartz?
Both can last decades. A serviced mechanical movement can run for generations, while a quartz movement depends on its electronics and replacement parts. Quartz needs battery changes every few years; Seiko quotes about 3 years for its 7N01 and about 5 years for its 7C17.
Can you put a quartz watch on a watch winder?
No. A quartz watch has no rotor or mainspring, so a winder does nothing for it. Winders are only for automatic mechanical watches.
Why are automatic watches more expensive than quartz?
A mechanical movement has many small parts that must be made and adjusted precisely, while a quartz movement relies on mass-produced electronics. Automatics also cost more to maintain, because servicing involves taking the movement apart and lubricating it.
How can I tell if a watch is quartz or automatic?
Watch the seconds hand. A one-step-per-second tick usually means quartz, while a smooth sweep usually means mechanical. The dial, case back or caliber number will confirm it.
The bottom line
Quartz is the better tool. An automatic is the better object, if you enjoy mechanical things. If you go automatic and own more than one, a winder keeps them running between wears without harming them, as we explain in are watch winders bad for watches?.