What are the case specifications of the OMEGA?

The OMEGA features a White Gold case.

What movement does the OMEGA use?

The OMEGA is powered by a Manual Winding, caliber 440.

When was the OMEGA produced?

The OMEGA OG 12789 has been in production since 1956.

OMEGA OG 12789

Manual WindingWhite Gold

Ref. OG 12789

Movement: 440Production: 1956 - Present

Add to my inventory

Free account required - pre-fills all specs automatically

Last updated 5 Oct 2026Suggest a correction

TECHNICAL SPECIFICATIONS

CASE

Case Material

White Gold

MOVEMENT

Movement Type

Manual Winding

Caliber

440

BRACELET/STRAP

Bracelet/Strap

Leather

Other watches with the 440 calibre

Show all →

OMEGA

OT 10784

Manual Winding

OMEGA

Saphette

OT 10953

Manual Winding

OMEGA

OT 10968

Manual Winding

QUICK FACTS

BRAND

OMEGA

REFERENCE

OG 12789

MOVEMENT

Manual Winding

CALIBER

440

CASE MATERIAL

White Gold

PRODUCTION

1956 - Present

Add to my inventory

Last updated 5 Oct 2026Suggest a correction

FOR WATCH DEALERS

Trading the OMEGA OG 12789?

Clone any catalog watch into your stock, sync it to Chrono24 and eBay, and invoice it with your own tax settings.

Explore dealer tools See inventory management

OMEGA OG 12789

TECHNICAL SPECIFICATIONS

CASE

MOVEMENT

BRACELET/STRAP

More from OMEGA

Pocket watch Medicus

1064 CK

1067

Constellation

De Ville

De Ville

Constellation My Choice

Constellation Ladies' Mini Quartz

Other watches with the 440 calibre

OT 10784

Saphette

OT 10968

QUICK FACTS

FOR WATCH DEALERS