The ETA 2428 is a classic Swiss automatic movement introduced in 1956, known for its reliability and historical significance in the world of mechanical watches. This movement operates at a frequency of 21,600 vibrations per hour (3 Hz), making it a robust option for vintage and classic timepieces.
Key Features
The ETA 2428 is an automatic caliber, not featuring a ball bearing or gold rotor, distinguishing it from some other ETA models.
It incorporates an indirectly driven minute hand, allowing for a larger balance wheel, which contributes to improved timekeeping stability.
The movement shares design similarities with the Eterna 1419U and is part of a broader series that includes manual wind variants.
Technical Specifications
Frequency: 21,600 vibrations per hour (3 Hz)
Power Reserve: Approximately 38–42 hours depending on variant and usage
Balance: Larger balance due to indirect minute drive
Shock Protection: Standard Swiss shock protection system
Bulletin Points
Introduced in 1956, the ETA 2428 is a milestone in Swiss automatic movement development.
Notable for its robust construction and compatibility with vintage watches.
The indirectly driven minute hand allows for a larger balance, enhancing stability.
Operates at 3 Hz, which is lower than the more common 4 Hz found in later ETA movements.
Still sought after by collectors and restorers for its historical value and reliability.
The ETA 2428 remains a respected movement for vintage watch enthusiasts and professionals seeking authentic mechanical calibers for restoration projects.
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Watch Parts Enquiry
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Stem, Crown, Hands & Spares might be available for this movement.
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