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:

1108

ETA 2892-A2

1120

ETA 2892-A2

1128

Omega 1120 (ETA 2892-A2)

1138

ETA 2890-A2 & Dubois-Dépraz 2030 Chrono Module

1143

ETA 2890-A2 & Dubois-Dépraz 2020 Chrono Module

1151

ETA 7751

1152

ETA 7750

1164

ETA 7750

1221

ETA 2892-A2

1270

Piguet 1270

1376

ETA 280.002

1400

ETA 205.111 Rhodium Plated

1424

ETA 256.461

1426

ETA 256.111 Yellow Gold Plated

1440

ETA 255.441

1456

ETA 976.001

1471

ETA 282.001

1479

ETA 210.011

1530

ETA 255.411

1532

ETA 255.111

1538

ETA 255.461

1665

ETA 988.431

1666

Exclusive Omega Development (Speedmaster X-33)

1680

ETA 252.511

1861

Lemania 1873 Rhodium Plated Version of c.861

1863

Lemania 1873 Rhodium Plated Version of c.863

1866

Lemania 1874 Rhodium Plated Version of c.866

2400

Skeleton Omega 1012 Yellow Gold Plated

2401

Skeleton Omega 1012 White Rhodium Plated

2402

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

2500

Omega 1120 (ETA 2892-A2)

2600

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