Miyota 9015 vs ETA 2824-2: The Movement You Can Buy vs The One You Can't
If you're searching this comparison in 2026, one of two things is true: you're looking at a watch with an ETA 2824-2 on the secondhand market, or you're trying to understand the landscape of movements that independent brands actually use. Either way, the context matters more than the specs — because the ETA 2824-2 is no longer available to most watchmakers, and the Miyota 9015 is one of the movements that filled the gap.
This isn't a comparison where you choose between two options on a shelf. It's a comparison that explains what replaced what, and why.
The Specs
| Miyota 9015 | ETA 2824-2 | |
|---|---|---|
| Manufacturer | Citizen (Japan) | ETA / Swatch Group (Switzerland) |
| Jewels | 24 | 25 |
| Beat rate | 28,800 vph (4Hz) | 28,800 vph (4Hz) |
| Power reserve | 42 hours | ~38 hours |
| Thickness | 3.90mm | 4.60mm |
| Diameter | 26mm | 25.6mm |
| Date | Yes (quickset) | Yes (quickset) |
| Hacking & hand-wind | Yes | Yes |
| Rotor | Unidirectional | Bidirectional (ball bearing) |
| Accuracy (rated) | -10 to +30 sec/day | Depends on grade |
| Shock protection | Parashock | Novodiac / Incabloc (by grade) |
| Grades available | One | Four (Standard, Elaboré, Top, Chronometer) |
| Availability (2026) | Widely available | Effectively restricted to Swatch Group |
Same beat rate. Both hack and hand-wind. Both have date functions. The 9015 is thinner and has more power reserve. The 2824-2 has a quieter rotor, a grade system, and four decades of heritage. But the availability line at the bottom is the one that determines which of these you'll actually find in a new watch.
Can You Still Buy the ETA 2824-2?
The ETA 2824-2 was the default Swiss automatic movement for decades. If you bought a Swiss mechanical watch between 1980 and 2015, there was a very good chance it was running a 2824-2. It was everywhere — affordable, reliable, universally serviceable, and available to any brand willing to order in quantity.
Then ETA, a subsidiary of the Swatch Group, began restricting third-party supply. The process was gradual — announced in stages, delayed by the Swiss Competition Commission, and negotiated over years — but the practical outcome is clear: by 2026, independent brands cannot source the ETA 2824-2 in commercial quantities. ETA still produces it, primarily for Swatch Group brands, and even internally it's being phased in favour of the Powermatic 80 family. But for anyone outside the group, the 2824-2 is effectively gone.
The Sellita SW200 filled most of the void — it's a direct clone built on the same expired-patent architecture. We've written that comparison separately. But the Miyota 9015 also stepped in, offering a different proposition entirely: not a Swiss clone of the ETA, but a Japanese alternative that competed on engineering rather than heritage.
Thickness: 0.7mm and the Reason Brands Switched
The Miyota 9015 is 3.90mm thick. The ETA 2824-2 is 4.60mm. That's 0.7mm — the same gap as between the 9015 and the Sellita SW200, because the SW200 shares the 2824-2's dimensions exactly.
This was always the 9015's primary advantage over Swiss movements. A brand that wanted to build a slim watch — sub-11mm, elegant proportions, something that sat close on the wrist — couldn't do it with a 2824-2 as easily as they could with a 9015. The Miyota let you build thinner. That was its pitch, and it was a genuine one.
The Baltic Aquascaphe, Lorier Neptune, Dan Henry, and dozens of other well-regarded independents adopted the 9015 or its no-date sibling the 9039 for exactly this reason. When ETA's supply dried up and the choice became "SW200 at the same thickness as the 2824-2" or "9015 at 0.7mm thinner," the 9015's thinness became an even stronger selling point. A brand using the 9015 isn't choosing second-best — they're choosing the movement that makes their case design possible.
The Rotor
The ETA 2824-2's bidirectional ball-bearing rotor was one of its strongest features. Quiet, efficient, reliable. The Miyota 9015's unidirectional rotor has a reputation for noise — "Miyota rotor whir" is the most commonly cited knock on the movement, and it's not unfounded.
This is a genuine difference. The 2824-2 felt more refined in this respect. Brands using the 9015 sometimes mitigate the noise with custom-weighted rotors, but the stock 9015 rotor can be audible in a way the stock 2824-2 never was.
If you're comparing a secondhand watch with a 2824-2 against a new watch with a 9015 and rotor noise matters to you, the ETA has the edge. It's one of the few areas where the older Swiss movement was unambiguously better than its Japanese replacement.
Accuracy and Grades
The Miyota 9015 comes in one spec: -10 to +30 seconds per day. No grades, no tiers. What you see is what you get.
The ETA 2824-2 came in four grades — Standard, Elaboré, Top, and Chronometer — with progressively tighter accuracy, better components, and more position adjustments at each level. A Top Grade 2824-2 (five-position adjustment, Glucydur balance wheel, Incabloc shock protection) was a meaningfully better-regulated movement than the 9015. A Standard Grade 2824-2 was roughly comparable.
This grade system was one of the 2824-2's genuine advantages. It let brands choose how much to invest in the movement based on the watch's price and positioning. The 9015 offers no equivalent flexibility — every unit is the same spec. If grade-level regulation matters to you and you're buying new, the Sellita SW200 inherited this system and is where to look. The 9015 can't match a five-position-adjusted Swiss movement on paper accuracy.
In daily wear the difference is academic for most people. Both movements, at any grade, keep time well enough that you'll never notice the gap unless you're running a timegrapher.
Serviceability
The 2824-2 has the deepest service network of any automatic movement ever produced. Forty years of volume production means spare parts are abundant and every watchmaker alive has serviced dozens of them. This advantage will persist for decades — even though new supply has dried up, the installed base is enormous.
The 9015 is newer but widely serviceable. Any competent watchmaker can work on one, parts are available, and the ecosystem grows every year as more 9015s enter the market. Replacement cost is lower — around £80-100 for a 9015 versus more for a 2824-2, particularly at higher grades.
If you're buying a watch to keep and service for twenty years, both movements will be fully serviceable. The 2824-2 has a deeper parts network. The 9015 is cheaper to replace entirely. Neither is a practical concern.
What the 2824-2 Meant and What the 9015 Represents
The ETA 2824-2 was the foundation of the Swiss independent watch industry for decades. It made affordable Swiss mechanical watches possible. Its departure from the open market is the single biggest supply-chain disruption the watch industry has seen in the last twenty years, and its effects are still shaping which movements brands choose and which watches get built.
The Miyota 9015 represents a different model: a Japanese movement manufacturer competing on engineering rather than heritage, on thinness rather than tradition, on value rather than prestige. It doesn't carry the Swiss Made label. It doesn't have a grade system. It doesn't have a bidirectional rotor. But it's thinner, it has more power reserve, it costs less, and — crucially — it's available.
In 2010, a brand choosing between the Miyota 9015 and the ETA 2824-2 was making a philosophical statement about Swiss vs Japanese watchmaking. In 2026, the choice has already been made by the market. The 2824-2 isn't an option for new watches from independent brands. The 9015, the SW200, and the La Joux-Perret G100 are.
So Which One?
If you own a watch with a 2824-2 — keep it. It's a great movement with a legendary track record. Service it on schedule and it'll run for decades. The movement hasn't gotten worse just because new ones aren't being made for independents.
If you're buying new and comparing a Miyota 9015 watch against a secondhand ETA 2824-2 watch — the comparison is legitimate. The 2824-2 has the quieter rotor and the grade system. The 9015 is thinner, has more power reserve, and costs less to replace. The right answer depends on what you value, but both are excellent movements.
If you're buying new and see a brand claiming to use an ETA 2824-2, ask where they sourced it. It's not impossible — old stock exists, some supply arrangements persist — but it's unusual enough in 2026 to be worth confirming.
The bottom line on quality: at Standard grade, the 9015 is comparable or arguably better — thinner, more power reserve, tighter factory accuracy spec. At Top or Chronometer grade, the ETA 2824-2 was the superior regulated movement. The 9015 has no equivalent upgrade path, but the Sellita SW200 inherited the ETA's grade system if that matters to you.
We've written comparisons of the 9015 against the SW200 and the SW200 against the 2824-2 if you want the full picture of how these three movements relate to each other. And the movement breakdown at every price point covers where each one fits in the market.
If you want help with a specific watch, that's what we're here for at CalderoneWatchCo.