Omega Caliber 1109
Omega Caliber 1109

Omega Caliber 1109

The Omega caliber 1109 is an automatic movement found in some Omega Seamaster Pro 300M watches from the early 1990s (1993?). This movement can be found in both the full-size 41mm and the mid-size 36mm SMP.

The 1109 is essentially based on the ETA caliber 2892-A2 framework. It has a beat rate of 28,800 4Hz, 21 jewels and a power reserve of 44 hours. This movement has a quickset date, hacking seconds, and can be hand-wound.

This movement was later replaced by the Omega caliber 1120 in the mid to late 90s (1996?).

Note: This caliber listing is still being updated, but feel free to start discussions on it in the comments below…

You are reading Caliber Corner, the world's most popular resource for watch movement pics, specs, mods and DIY repairs. Follow @calibercorner on Twitter, Instagram but NOT Facebook. Subscribe on YouTube. Join our mission to spread movement awareness!

Join the discussion on Omega Caliber 1109?

  • Keep comments respectful and follow our community guidelines.
  • Keep comments on the topic of Omega Caliber 1109

For off topic or general watch questions, post in the Caliber Corner Forum.

guest

3 Comments
oldest
newest most voted
Inline Feedbacks
View all comments
Mike
Mike
9 months ago

The 1109 is not based on the ETA caliber 2892-A2 framework, it IS an ETA 2892-A2, and even retains the ETA stamping on it. In the early 90’s, before developing their own ETA based movement, the 1120, Omega pulled a Tag Heuer and simply bought ETA movements, slapped on an Omega branded rotor, and installed them in their watches.

potato
potato
8 months ago
Reply to  Mike

then how you explain the 2 hours difference of power reserve if the are the exact same movement ?

Mike
Mike
8 months ago
Reply to  potato

In a nutshell? The stated power reserve is inaccurate, sort of: Basically, for the ETA 2892-A2, ETA stated a nominal power reserve of 42 hours. That means the minimum you can realistically expect, though the range seems to be anywhere between 42-50 hours. Omega, in all likeliness, simply listed 44 hours as they probably felt the 42 hour listing was a bit too aggressively underrated. Other than the rotor, I am aware of no evidence or documentation to suggest Omega made any other changes. It certainly is possible, but they absolutely did not change any architecture, nor did they actually… Read more »

Seagull Caliber St19

Join our mission to spread movement awareness!

Members Online

  • keepthetime pc1093

Recent Forum Posts

Trending Comments

3

Sellita Caliber SW200 VS SW200-1

Wow man, you should join the R0l3X club, they're desperately looking for new members, but…


I_Am_Watcher
3

Sellita Caliber SW200 VS SW200-1

Basically you are saying that one of the world's most used workhorse movements is complete…


admin
2

Seiko Caliber 6N52

Thank you for sharing with the community.


2

Hangzhou Caliber 6460

One more update. I had a watchmaker regulate it 3 weeks ago. I wanted to…


2

ETA Caliber C07.XXX

I can confirm that the escape wheel from a standard 2824-2 movement is NOT interchangeable…


Sponsors

3
0
Would love your thoughts, please comment.x
()
x