ETA chart of basic details: ETA 2824-2, 2892-A2, & 7750
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  1. #1
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    ETA chart of basic details: ETA 2824-2, 2892-A2, & 7750

    These are the most popular ETA movements and oftentimes questions arise to the movements' general qualities and composition as a comparison. So, I hope this chart helps for beginners, enthusiasts and even WIS's as easy reference of sorts (though, I'm sure you have it memorized!). Please note that the standard grade ETA 2892-A2 & 7750 movements don't exist. Also note that there is no difference between top and chronometer grades, save for the lemons weeded out with respect to the stricter accuracy and testing in the chronometer grade. Further note that many of the other ETA movements are based on (added complications/modifications to) these movements. Here's a chart of some of the info on the ETA 2824-2, 2892-A2, & 7750 movements: ETA's holy trinity.



    COSC Standards

    Average daily rate: -4/+6 sec
    Mean variation in rates: 2 sec
    Greatest variation in rates: 5 sec
    Difference between rates in horizontal & vertical positions: -6/+8 sec
    Largest variation in rates: 10 sec
    Thermal variation: 0.6 sec
    Rate resumption: 5 sec
    Last edited by TempusExMachina; March 20th, 2011 at 21:32. Reason: COSC info added
    Best Regards,

    Tempus

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    Re: ETA chart of basic details: ETA 2824-2, 2892-A2, & 7750

    Real cool, thanks!
    I was sure the 2824 Elabora had the incabloc shock system.
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    Re: ETA chart of basic details: ETA 2824-2, 2892-A2, & 7750

    Quote Originally Posted by Jeep99dad View Post
    Real cool, thanks!
    I was sure the 2824 Elabora had the incabloc shock system.
    It can be added in place of Etachoc, same as the hairspring can be upgraded. A piece by piece breakdown was explained here: Smoke and Mirrors - part 1 (ETA grades explained), even some more details than the above chart. The additional information on the amplitude is interesting though.

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    Re: ETA chart of basic details: ETA 2824-2, 2892-A2, & 7750

    Incabloc is available as an option on the lower grades; many manufacturers specify it as it is quite a good selling point.

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    Re: ETA chart of basic details: ETA 2824-2, 2892-A2, & 7750

    Interesting. I didn't know the 7750 (like the 2892) is not available standard grade, but begins at elabore, adj. 3 positions. And the movement height for 7750 is 7.9mm vs. 3.6mm for the 2892--that's a dramatic difference.

    Thanks to OP for getting this together for us .

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    Re: ETA chart of basic details: ETA 2824-2, 2892-A2, & 7750

    It's the list from Hell for the ETA bashers.

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    lvt
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    Re: ETA chart of basic details: ETA 2824-2, 2892-A2, & 7750

    It's a shame that ETA don't make complete watches, they could easily compete with Omega and Rolex if they invest enough in decoration and assembly quality control.

    Their movements are truly "in-house" and the performance is stunning, watches with 2824, 2892 and 2836 chronometer movements usually run as good as Grand Seiko for only 1/5th of the price.

    Thanks for posting the chart, I used to have it in my computer but didn't think about posting on the forum
    Ball - Casio (G-shock) - HMT - Longines - Parnis - Seagull - Tissot - Victorinox - Yema

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    Re: ETA chart of basic details: ETA 2824-2, 2892-A2, & 7750

    Quote Originally Posted by Watchbreath View Post
    It's the list from Hell for the ETA bashers.
    I don't think too many folks bash eta. I think folks bash brands that overcharge for cased up stock eta movements.
    lvt, Watch Stig and SMP89 like this.
    the official canadian time: http://time5.nrc.ca/webclock_e.shtml

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    Re: ETA chart of basic details: ETA 2824-2, 2892-A2, & 7750

    Quote Originally Posted by Ananda View Post
    I don't think too many folks bash eta. I think folks bash brands that overcharge for cased up stock eta movements.
    Couldn't have said it better!
    SMP89 likes this.

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    Re: ETA chart of basic details: ETA 2824-2, 2892-A2, & 7750

    Quote Originally Posted by lvt View Post
    It's a shame that ETA don't make complete watches, they could easily compete with Omega and Rolex if they invest enough in decoration and assembly quality control.

    Their movements are truly "in-house" and the performance is stunning, watches with 2824, 2892 and 2836 chronometer movements usually run as good as Grand Seiko for only 1/5th of the price.

    Thanks for posting the chart, I used to have it in my computer but didn't think about posting on the forum
    Bear in mind the historical context of a mainly horizontally structured industry. The perceived importance of vertically integrated inhouse manufacture is a fairly recent phenomenon, that I think is related to the reinvented appeal of the mechanical wristwatch based on notions of luxury & exclusivity.

    If you want an 'ETA watch'... buy an Eterna
    whatmeworry likes this.

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