**Base Movement Information for Omega Calibers...****Transcribed by Chuck Maddox****on 15 October 2001, 20:15 GMT****Last Revised: 15 January 2006, 05:45 GMT**

Simply put, a handy table to reference when visiting Omega's Website and gleaning information...

**Omega****Calibre:****Base Movement:**ETA 2892-A2

ETA 2892-A2

Omega 1120 (ETA 2892-A2)

ETA 2890-A2 & Dubois-Dépraz 2030 Chrono Module

ETA 2890-A2 & Dubois-Dépraz 2020 Chrono Module

ETA 7751

ETA 7750

ETA 7750

ETA 2892-A2

Piguet 1270

ETA 280.002

ETA 205.111 Rhodium Plated

ETA 256.461

ETA 256.111 Yellow Gold Plated

ETA 255.441

ETA 976.001

ETA 282.001

ETA 210.011

ETA 255.411

ETA 255.111

ETA 255.461

ETA 988.431

**Exclusive Omega Development (Speedmaster X-33)**ETA 252.511

Lemania 1873 Rhodium Plated Version of c.861

Lemania 1873 Rhodium Plated Version of c.863

Lemania 1874 Rhodium Plated Version of c.866

Skeleton Omega 1012 Yellow Gold Plated

Skeleton Omega 1012 White Rhodium Plated

Omega 2500 (ETA 2892-A2) Skeleton/White Rhodium Plated

Omega 1120 (ETA 2892-A2)

Omega 2600 (Central tourbillion)

**Note:**The c.1666 is the only known (for certain)Omega "In-House" calibre. No other watch that Omega currently sells is not based on a Lemania, ETA, ETA-Valjoux, or Piguet movement of some stripe. For All I know the Omega 2600 is another "in-house" movement, but I have not been able to confirm it's origin.

I'd like to thank John Christiansen of Jared Fine Jeweler's for graciously granting my request to transcribe this from his Omega Binder. I only hope that my conversation while I did this was interesting and informative...

If you have updates, corrections, additions please contact me the compiler...

-- Chuck