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The Omega 8601 Movement Date Indicator (7228601A9143B18) is a genuine original component designed for the Omega Caliber 8601 annual calendar automatic movement . This date indicator is a critical part of the calendar mechanism, displaying the current date through the dial window. It is typically replaced during professional servicing when wear, fading, or irregular date-changing behavior is observed.
Genuine Omega part – authentic original component for Caliber 8601
Calendar mechanism component – displays the date through the dial window
Annual calendar system – supports the movement’s 30/31-day month recognition function
Precision-printed numerals – clear and legible date display
Direct replacement – designed for professional servicing and restoration
Part Number: 7228601A9143B18
Compatible Movement: Omega Caliber 8601 (Co-Axial automatic, annual calendar)
Movement Diameter: 29.0 mm
Movement Height: 7.0 mm
Jewels: 39
Frequency: 25,200 vph (3.5 Hz)
Power Reserve: 55 hours
Movement Features: Annual calendar with instantaneous date/month jump, free-sprung balance with silicon balance-spring, two series-coupled barrels, bi-directional automatic winding
Origin: Switzerland (Omega factory part)
Condition: Brand new
Service and overhaul of Omega Caliber 8601 movements
Calendar mechanism repair – replacing worn, faded, or damaged date indicators
Restoration of Seamaster Aqua Terra, De Ville, and other 8601-powered models
Suitable for professional watchmakers and authorized service centers
1. Is this a genuine Omega part?
Yes, this is a genuine Omega factory part (reference 7228601A9143B18), manufactured in Switzerland. It is not an aftermarket or generic component.
2. Which movement is this date indicator compatible with?
This date indicator is specifically designed for the Omega Caliber 8601 automatic annual calendar movement . Please verify your movement caliber before ordering.
3. What is the function of the date indicator?
The date indicator is part of the calendar mechanism that displays the current date through the dial window. In the Caliber 8601, it works with the annual calendar system that automatically recognizes months with 30 and 31 days, requiring manual correction only once a year on March 1 .
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