Eta Caliber 2892 A2

ETA Caliber 2892A2

Eta Caliber 2892 A2

Manufacturer ETA
Caliber Number 2892A2, 2982-A2
Base Caliber
ETA 2892, 2892-2
Movement Type Automatic, self-winding mechanical
Lignes 11 1/2”’
Diameter
25.6mm
Height 3.6mm
Jewels 21
Power Reserve 42 hours
Beat Rate
28,800 vph (4Hz)
Lift Angle 51 degrees
Shock System Incabloc
Regulator System ETACHRON
Rotor Ball bearing system
Rotor Winding Direction Bi-directional
Hand-Windable?
Yes
Hands Count
3
Features Central hours; central minutes; central sweeping seconds; date (location varies based on dial design)
Hacking Seconds?
Yes
Quickset Date?
Yes
Country of Manufacture Switzerland, Swiss made
Known Models Kobold Large Soarway Diver, Kobold Soarway Diver Tactical, Kobold Lynx, Zelos Swordfish 300m, Chronoswiss Wristtimer, Tire’d Rapide GX, Tiffany & Co. Grand Automatic, Doxa SUB 5000T (Too many to list, add your watch in the comments below…)

The ETA caliber 2892A2 is a thin 21 jewels Swiss made automatic watch movement with a frequency of 28,800bph. It is often considered to be the top of the line with regards to offerings from ETA.

Updated tech sheets for this caliber were found dated as recently as August 2016. Although official documentation indicates that this movement was in production as far back as 2004, it was actually introduced around 2000 when it replaced the 2892-2.

Caliber Confusion:

You may see this caliber written as 2892-A2 or 2892/A2, but the official designation from ETA is 2892A2. Although Caliber Corner uses all 3 spelling variations for SEO purposes, I wanted to clarify that not only does the official documentation spell it as 2892A2, but on actual movements the number is also engraved without a space, hyphen or slash.

Typically, ETA adds a “-2” to an evolution caliber, but they had already evolved the 2892 to the 2892-2. Most of us could agree that the common sense thing to do would be to write the next evolution as 2892-3, but ETA opted for an A2 instead – sometimes causing caliber confusion. Just keep in mind that while most parts are interchangeable between the 2892/2892-2/2892A2, they are still different movements with different parts lists.

2892 VS 2892-2 VS 2892A:

The 2892-A2 is based the 2892-2 which is based on the original ETA caliber 2892. The calibre 2892 was a larger 28mm diameter movement with a beat rate of 18,000 bph – the smaller and more modern 25.6mm diameter caliber 2892-2 (and 2892A2) has a higher frequency of 28,800bph. To compensate for the increased rate, an improved mainspring and automatic winding system was needed on the 2892-2 (and 2892A2). Also, because of the reduction in overall diameter while retaining the same 3.6mm height, the rotor was also smaller with less mass – causing issues with automatic winding efficiency.

Here is an excerpt from The Little Engine that Could – An indepth look at the ETA 2892, explaining the evolution from 2892-2 to 2892A2 and how they compensated for the issues caused by shrinking the diameter:

“For the more technically minded, the final modifications to the automatic winding was to reduce the chamfer around the circumference of the oscillating weight – thereby increasing its mass. And to switch the stud and the jewel which supported the intermediate reduction wheel. This wheel, which drives the ratchet driving wheel, originally had a stud, but now has a jewel. The stud has now replaced the jewel in the upper part of the automatic winding bridge. This resulted in less winding friction due to this wheels much greater stability. Omega (and Girard Perregaux) have increased the winding efficiency further by reducing the diameter of the ball bearing support.” -Source: http://www.chronometrie.com/eta2892/eta2892.html

Off topic, but worth sharing, the aforementioned article goes on to say this about the 2892A2:

“So what exactly is it that makes this movement so special? Or to rephrase the question, how come this movement is so accurate and reliable? Beats me if I know!! To be perfectly honest, I think that it is just a great design with compromises that have been intelligently chosen and superbly executed in its best incarnation. It incorporates all the latest knowledge and advances in both materials and movement design. Its generous supply of available torque means that it will not be easily stopped, even when powering extra complications.”

ETA 2893A2 VS Sellita SW300-1:

The Sellita caliber SW300-1 is considered to be a clone of the 2893A2. Since the 2892A2 isn’t available anymore, the SW300-1 has taken its place. For that reason, you will find more SW300-1 in new non-Swatch Group watches.

As the Sw300-1 is based on the 2892A2, most of the base specs are exactly the same: diameter, height, lift angle, beat rate, rotor style, etc. However, there are some notable differences, including:

ETA 2892A2 Sellita SW300-1
21 Jewels 25 Jewels
42 hrs power reserve 42-56 hrs power reserve*

*The increased power reserve on some SW300-1 movements is thanks to Sellita’s “Optimization Barrel” option.

Accuracy:

Accuracy of the ETA caliber 2892-A2 can range from as much as +/-20 seconds per day to just +/-5 seconds/day or COSC spec. The accuracy that your watch experiences depends on the grade that the watch manufacturer chose to power their watches. This could also depend on whether they regulated it beyond the factory specs.

Grades of 2892-A2:

Similar to other ETA movements, there are 3 grades of production quality.

  • Elaborated Grade – Adjusted to four positions / average accuracy of +/-5 sec/day to +/-20 sec/day.
  • Top Grade – Adjusted to five positions / average accuracy of +/-4 sec/day to +/-15 sec/day.
  • Chronometer (COSC) Grade – Adjusted to five positions / average accuracy of -4/+6 sec/day.

As Wikipedia puts it:

“The key components which differ at the line of demarcation between Elaborated and Top are the pallet stones, balance wheel & hairspring, and the regulator mechanism. The degree of decoration on the movement’s parts also increases with the grade.” –Source

2892A2 as a Base:

The 2892A2 is the base for a variety of ETA 289X-X configurations, including:

Other Calibers Based on 2892A2 Framework:

The 2892A2 has been widely used in the watch industry for many years as an ebauche with brand specific caliber numbers. For example:

  • When Omega used this movement they called is the caliber 1120, 1128 (GMT), and 2500.
  • Longines has the L619.2 and L888.4.
  • IWC has versions of the 2892A2 which they call 37524, 30110, and 30120.
  • TAG Heuer has the Calibre 7.
  • Maurice LaCroix has the ML-129.
  • Clerc dubbed theirs the C609.
  • Chronoswiss C.950
  • Even Ball Watch Company has the RR1101, RR1201 and RR1801.
  • Tiffany & Co. Grand Automatic
  • Breitling and more!

There are too many to list, but eventually this section will be more complete. In the meantime, please comment below if you have a watch based on the 2892A2.

Examples of Watches with Cal. 2892A2:

Below is an example of a Top grade 2892A2 with a custom rotor that was found in this Kobold Soarway watch.

Eta Caliber 2892a2 Top

Replacement Prices:

By now it’s old news that ETA movements are unavailable to brands outside of Swatch Group, however, there are still watch parts sellers with new old stock available. Raw movements can be found in the range of $300-500 USD, depending on the grade. The 2892-A2 always was, and continues to be, a pricey 3 hands + calendar movement, so much so that even the 2892-A2 clones from China cost between $100-$200 USD.

Tech Sheets PDF:

Additional Resources:

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Steve Steve Steve Allen Allen
Steve Steve Steve Allen Allen
8 years ago

+ Omega 1120?

Jerry
Jerry
5 years ago
Reply to  calibercorner

Still no Omega 1120 at Oct 2018?

Jerry
Jerry
5 years ago
Reply to  calibercorner

No, I don’t, but I’ve heard the 1120 is based on the 2892-A2 and would like to compare them. I may be doing a watchmaking bench test on the 1120.

L Kerh
L Kerh
3 years ago

Yes, it’s also the Omega 1120. A very accurate and reliable chronometer grade movement as used by Omega. Only downside is it’s not technically an in-house movement.

Oumar Loupiz
Oumar Loupiz
8 years ago

Are you also going to post ETA 2897 ? or is it the same movement as the 2892 only with the Power Reserve complication?

trackback
Sellita Caliber SW300-1 Watch Movement | CaliberCorner.com
7 years ago

[…] Sellita SW300 is the main competitor to the ETA 2892. Many reputable watch companies are using this movement as an alternative to the ETA mechanism due […]

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Tired Rapide GX Rubberized Automatic Watch Video Review | KeepTheTime Video Reviews
7 years ago

[…] Caliber: ETA 2892-A2 […]

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Ulysse Nardin Caliber UN-22 Watch Movement | CaliberCorner.com
6 years ago

[…] ETA 2892-A2 […]

Bobby Bleu
Bobby Bleu
6 years ago

My Breitling Chrono Cockpit houses a Breitling 30 calibre that I believe is based on the ETA 2892-A2 movement. My Omega De Ville has a 1120 based off the ETA 2892-A2 also. Am I correct?

Bobby Bleu
Bobby Bleu
5 years ago
Reply to  calibercorner

I’m happy to report I have added another watch using the 2892-A2 to my collection. It’s a new Omega Seamaster 300m Diver with the Omega 2500D Co-Axial modification. I passed on the 2018 Seamaster with the new Master chrono movement due to the overall case size, I have a thin wrist and 41 was my max. I’ve had it 3 weeks and am thrilled with it.

Jack T
Jack T
3 years ago
Reply to  Bobby Bleu

If I’m not mistaken, my Planet Ocean 42mm has the 2500d movement. It’s 9 years old, keeps perfect time, a great watch. I love the 300m, enjoy yours.

Philip Montenigro
Philip Montenigro
5 years ago

Mido Broncelli Heritage (specific editions).

Love this watch love this movement. More to come

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Bulgari Caliber 220 Watch Movement | CaliberCorner.com
5 years ago

[…] ETA 2892-A2 […]

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Longines Caliber L619 Watch Movement | CaliberCorner.com
5 years ago

[…] ETA 2892/A2 […]

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Breitling Caliber B35 Watch Movement | CaliberCorner.com
5 years ago

[…] Breitling calls caliber B35 an in-house movement, it is based on ETA 2892 and manufactured by Breitling. The world time complication is a patented module that Breitling […]

András
András
5 years ago

I own a Steinhart pilot with this movement, Elaboré grade. For months now i did not have to adjust a time as it is dead on within a 0.5-1s/day.
Its pretty much perfect, winds very effectively, silente and reliable.

Hector Pastore
Hector Pastore
4 years ago

Baume & Mercier Capeland S XXL 1000M Titanium Diver 65414 Yellow Carbon 43MM

Robin
Robin
4 years ago

Omega 2500 is based on this caliber as well, right?

Jack T
Jack T
2 years ago
Reply to  calibercorner

This is good to know, as I own a Planet Ocean 2500d. Always thought the Co-axial based movements were separate and different from the others.

Hans petter Hvile
Hans petter Hvile
4 years ago

My Eterna Matic KonTiki Chronometer
Officially Certfied
has this Caliber

trackback
IWC Pilot Watch MKXVIII: Review - The Truth About WatchesThe Truth About Watches
4 years ago

[…] fast per day. That’s  well within spec for IWC’s ubiquitous 35111 Calibre (a modified ETA 2892), but I hoped for […]

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New Watch Alert: 3/13/2020 - The Truth About Watches
4 years ago

[…] startup fits the Snow Star with ETA’s top shelf 2892A2 movement, used by Breitling before they developed their Caliber 01. Positioned underneath an exhibition […]

Mark Ward
Mark Ward
4 years ago

Longines hydroconquest caliber 619/l888 mvt. 64 hr. Power reserve

Troy Phoenix
Troy Phoenix
4 years ago

Omega 1128?

trackback
New Watch Alert: 4/3/2020 - The Truth About Watches
4 years ago

[…] it’s get-up-and-go from Bell & Ross’ ubiquitous BR-CAL.301 movement, based on the ETA 2894-2. Blessed with a self-contained chronograph module, the engine offers a 42-hour power reserve. Water […]

Mark
Mark
3 years ago

I bough an elaborated grade one on eBay and after 3 days of wearing the watch I mounted it into and regulating it based on observations I obtained +2s/d going on from there. I’m very surprised and impressed. (new to watches)

Mark
Mark
3 years ago
Reply to  calibercorner

It is an old Bulova I also bought on eBay.

Mark
Mark
3 years ago
Reply to  calibercorner

I am a technician by trade so anything mechanical is my garden. So even if I am new to watches I’m not new to mechanics. I guess size doesn’t matter… ;D

Ato
Ato
2 years ago
Reply to  Mark

Hello, I was curious if you are still seeing such excellent accuracy in your elaborated grade? I wonder is it worth it to upgrade. Thank you in advance.

Hugo Arana
Hugo Arana
3 years ago

Hello, I bought an Alpina Ice Legacy wich use a AL 550. I woul like to confirm if this movement is the same as ETA2893.2, and wich is the grade. Thanks

Paul
Paul
3 years ago

43mm Longines conquest L3.778.4.58.6- 64 hours reserve . Runs at +4 seconds
Relay pleased, it was a present.
Thanks mum

trackback
Comparativa Divers Gama Media: DS Action, Hydroconquest, Aquis Y Sumo – SaFonaGastroCrono
3 years ago

[…] el Powermatic 80 (basado en el ETA 2824-2). El Hydroconquest lleva el calibre L888 (basado en el ETA 2892-A2). El Aquis viene equipado con un Sellita SW-200, un clon del ETA 2824. Finalmente, el SEIKO Sumo […]

Robert Murray
Robert Murray
3 years ago

IWC Portofino 3533

Matthew Hendrie
Matthew Hendrie
3 years ago

I’ve recently purchased a gold skeletonized ETA 2892-A2. I was curious about what it is made from. Real Gold? Brass?

Jerry
Jerry
3 years ago

The mainplate and bridges are probably brass with a gold flash plating. You bought just the movement? What watch is it for?

Matthew Hendrie
Matthew Hendrie
3 years ago
Reply to  Jerry

yes just the movement. I’m putting together something a bit bespoke I suppose.

MND2955
MND2955
3 years ago

How much did you pay for it? I think the answer will answer your original question.

Matthew Hendrie
Matthew Hendrie
3 years ago
Reply to  MND2955

It was listed for $500. I talked him down to $400.

Ato
Ato
2 years ago

What did you end up doing with this movement?

Mika Tikander
Mika Tikander
3 years ago

IWC Cal. 37524 is based on the chronometer grade. Gold plated. Was assembled and adjusted in Schaffhausen, and according to some sources with IWC specification mainspring barrel, escapement, and balance.

trackback
BALL DeepQUEST II Review - The Truth About Watches
3 years ago

[…] No surprise there. The BALL’s smooth sweeping second hand’s powered by a top grade ETA 2892-2, also used by OMEGA and […]

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New Watch Alert - 10/3/2020 - The Truth About Watches
3 years ago

[…] Spirit moves thanks to Longines caliber L888.4 (ETA 2892-A2 base). The COSC-certified chronometer boasts a 64 hour power reserve and a monocrystalline silicon […]

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Presentación Milus Archimedes – SaFonaGastroCrono
3 years ago

[…] su interior late el conocido y fiable calibre automático ETA 2892, en su acabado superior. Lleva 21 rubíes, oscila a 21.600 vph y ofrece una reserva de marcha d 42 […]

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Sablier Grand Cru 44 – Beans & Bezels
3 years ago

[…] watch uses an ETA 2892-A2 movement. A good choice of movement, and while they don’t mention the grade, I think it is […]

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Soprod Caliber A10 Watch Movement | Caliber Corner
3 years ago

[…] 4L25 was pitched as being a direct replacement of the ETA 2892A2. The A10 is not exactly an ETA 2892 clone, it is more like an ETA 2892 alternative. It is also […]

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Soprod Caliber M100 Watch Movement | Caliber Corner
3 years ago

[…] on the original Soprod caliber A10. This movement also shares similar characteristics with the ETA 2892-A2, such as dimensions and dial feet location, so it is considered to be a drop-in replacement or […]

Jack T
Jack T
3 years ago

Just found this website, great resource. Looking at a watch that runs on the 2892-A2, I believe it’s set to chronometer grade. Reassuring the movement has such a good reputation.

Jack T
Jack T
3 years ago
Reply to  calibercorner

Hello, the watch is a Wempe Iron Walker, new release, build quality is good, still not sure of the derivative design, integrated bracelet.

George K.
George K.
3 years ago

I would like to buy a “new” Baume Mercier Hampton MOA08821 and as far as I know it has a Soprod 9090 caliber, which is based upon an ETA 2892 A2 caliber, with a module for big date and power reserve. Does anyone has any experience on this caliber or watch ? Furthermore, the dealer told me that he has the watch since 2010 or 2011… I am new in this field and I am a bit suspicious about how “new” can be a watch that hasn’t work for a decade. Perhaps he has wound the watch regularly, perhaps not..… Read more »

trackback
Ressence Type 1 Review - Beyond Hands - FIFTH WRIST
3 years ago

[…] Convex System, or ROCS for short. This contains multiple gears that is driven by a heavily modified ETA 2892. On the dial, there are multiple interplanetary discs that display the hours, seconds, and day of […]

Can
Can
3 years ago

Is this a loud movement when winding? Some versions are disturbingly noisy. If that’s the case, does lubricating the ball bearing help?

trackback
Omega Dynamic III 5250.50 Review - FIFTH WRIST
3 years ago

[…] the Omega Dynamic III 5250.50 we have the caliber 1108, essentially an ETA 2892. Nothing special or unique but a simple, thin and very accurate movement.Case-wise we are looking […]

trackback
Omega De Ville Prestige 36.5mm – Beans & Bezels
3 years ago

[…] watch uses the Omega 2500 movement, which is a modified version of the ETA 2892. I love the 2892 on it’s own, and this one gets the Omega treatment with Omega’s […]

Jim
Jim
3 years ago

My old TAG Heuer Kirium Chronometer has the 2892-A2 (COSC). Still very accurate at 20 plus years old. Routine service by TAG has helped it!

Ahmet
Ahmet
7 months ago
Reply to  Jim

İ have tag heuer kirium 2892 cosc, i buyed new perfect time keeping. İ think never ever sold

Andrew Al-Adwani
Andrew Al-Adwani
2 years ago

Revue Thommen GMT power reserve runs this movement, or so I’m led to believe.

Marko M.
Marko M.
2 years ago

Victorinox Alliance Automatic – smoothly running ETA 2892 inside, sapphire, exhibition case, thin, Swiss Made underrated gem of a watch!

Michael
Michael
2 years ago

Hello,
I have a Tag Heuer S/el midsize with I believe has an ETA 2892-A2. I also have a IWC Pilot’s Watch Mark XVIII that the movement is broken. Can I put the Tag ETA into the IWC? Will the dial fit?
Thank you

Lance
Lance
2 years ago

I have a Sinn 856 S UTC with this caliber. It’s been extremely accurate over the last year and a half.

Lance
Lance
2 years ago

Correction- mine is the ETA caliber 2893-2My bad.

Zachray Nordin
Zachray Nordin
2 years ago

Avantist Watches, Legend Series, Martina Navratilova, Wimbeldon 1982.

trackback
Panerai Movement Scandal? – City Milano News
2 years ago

[…] Dépraz chronograph module isn’t cheap. But the base movement is nothing special. You can buy a ETA 2892-A2 in any number of timepieces: Longines, Bell & Ross, Hamilton, Breitling, IWC, OMEGA, Tudor and […]

trackback
ETA 2893-X Family Differences Explained Watch Movement | Caliber Corner
2 years ago

[…] is an automatic movement that is Swiss made with 21 jewels. It is a modular movement that uses the 2892-A2 as a base, but with the addition of a GMT complication. There are three variations of this movement […]

Bau Nguyen
Bau Nguyen
2 years ago

Hi, my Rado Sintra Automatic uses the ETA 2892-A2. My first luxury watch and its been fine. After a few years, it started losing 30 seconds per week. A service and it’s perfect again.

Hans F. Qua
Hans F. Qua
2 years ago

The Precimax from the 70’s does have this caliber as well.

DanielM
DanielM
2 years ago

The Hamilton Intramatic has this movement.

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