So what exactly does IWC do to an ETA?

I'm wondering what exactly IWC does to the ETA 2892 to make it worthy of being in their watches. I'm reading a lot of stuff but I can't find anything exact.

thanks

Most ETA movements are available in a variety of grades, the grades will determine finish including finish of screws and accuracy. What IWC achieves desires or specifies I don't know, but the goal is IWC's not a stock version of ETA.
I have two ETA powered movements and I find both to be accurate performers.

Hi Greg, relating to your response, how do you classify an accurate performer, is that compared to other IWC/modified movements? If then, which are the less accurate / reliable ones? Just asking because I have seen a lot of previous references to this, but no explanation to what is actually meant

Accurate as in consistent in its time keeping, so whether it gains or looses against my chosen refernce time source it remains consistent is my key criteria. Sometimes my watches can have an easy time and other times they have a bit of a workout, washing a car, mowing a lawn, sawing logs but never tennis, squash, golf in other words no activity with sharp shocks, those tasks are for the cheap watches only. I do not have any winders so I wind them up and wear them whether for a day or two or for a month with only a break of a day or two. But all mechanical watches can behave differently to different conditions just like most mechanical things. So some are consistent time keepers and some are not so good timekeepers.

This has been a FAQ for at least 15 years. There is much in the archives. Try these for starters:

www.iwcforum.com/Movements/IWC_Calibre_7xxx.pdf

www.iwcforum.com/Uhrenjournal.html

Yes, great for starters. But we also know that today IWC buys complete movements from ETA to their specifications. We also know that a lot of modifications done by IWC in the past made it into the A2 version of the 2892.

So, for me the question remains what the differences are between a 30110 and a (chronometer grade) 2892A2.

Here's my personal experience with ETA 2892-A2 movements:

MARK XVI - Measured over 1 year - +1 second.
AT2000 - Measured over 10 months - +2 seconds.

No service/QC issues since purchasing.

IWC, what were you thinking using these inferior movements ? Can't you find something more robust, reliable and accurate ? REALLY !

Please don't get me started on the Valjoux 7750's as I have a number of models with that movement.

Andy

Andy, that is a big thumbs up for persistence

Yes...over the period. It still blows me away that these two models have been so accurate and reliable. It is hard to argue that the 2892-A2 "workhorse" doesn't live up to it's reputation. While I'm sure the results I've experienced may be considered exceptional and the norm may be somewhat different, all I can say is I'm a fan and never think twice about my watches performance. If a model I'm considering utilizes a ETA, I never hesitate on pulling the trigger based on the movement.

BTW, my understanding is ETA's are easy to service which is a plus when I eventually require a maintenance lube job and cleaning.

Cheers,

Andy

To me, the benefit of an IWC modified ETA is that I can own an everyday watch that has:
a) both day & date display;
b) movement to IWC standard;
c) overall watch design that I enjoy;
d) at a relatively affordable price.

Hi guys. I didn't mean to say they aren't good enough, I just wanted to know what they do to them to get them "good enough."

Yes understood, I drifted away a bit, perhaps because I'm such a fan of the IWC/ETA combination. The links provided by MF answered your question.

Hi guys,

Just bought portuguese chrono in Hk. Just wondering, with so many fake IWC watches out there, how to tell whether my watch is real or fake?

Secondly, are portuguese chrono watches using a full complete eta 7750? or IWC in house modified eta7750? I ve researched this subject quite some time and didnt get clear answer.

thanks