Omega Caliber 1120: Reliable Automatic Movement from the 1990s

The Omega Caliber 1120 is an automatic mechanical movement introduced in the early 1990s. It is based on the ETA 2892-A2 platform, extensively modified and finished by Omega to meet their high standards for accuracy and durability.

This caliber was widely used in many Omega models, including Seamaster and Constellation collections, known for combining robust engineering with elegant design.

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Technical Specifications

• Type: Automatic mechanical

• Functions: Hours, minutes, central seconds, quickset date

• Jewels: 23

• Frequency: 28,800 vibrations per hour (vph)

• Power Reserve: Approximately 44 hours

• Diameter: Approximately 25.6 mm

• Thickness: Suitable for medium-sized wristwatches

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Watches Featuring Caliber 1120

The Caliber 1120 powered:

• Omega Seamaster Professional watches from the 1990s and early 2000s

• Omega Constellation models during the same period

• Selected dress and sport watches requiring reliable automatic movements

Typical features include:

• Stainless steel, gold, or two-tone cases

• Date windows at 3 o’clock

• Sapphire crystals with anti-reflective coatings

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Performance and Durability

The 1120 movement offers:

• Smooth and reliable automatic winding

• Stable and accurate timekeeping at 28,800 vph

• Robust construction suitable for everyday wear

• Moderate beat rate contributing to longevity and serviceability

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Maintenance and Servicing

Recommended maintenance includes:

• Servicing every 4 to 6 years

• Cleaning and lubrication of movement parts

• Replacement of worn components as needed

• Proper servicing of the automatic winding system

Authorized Omega service centers provide expertise and genuine parts.

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Collector Appeal

Collectors value the Omega Caliber 1120 for:

• Its use in many iconic Omega models of the 1990s and early 2000s

• Mechanical reliability and refined finishing

• Balanced design and performance

• A solid representation of Omega’s quality standards during this era

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Final Thoughts

The Omega Caliber 1120 remains a highly regarded automatic movement, embodying Omega’s dedication to precision, durability, and craftsmanship in the late 20th century. It continues to be a favorite among collectors and watch enthusiasts.

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