The ETA 1721.1 is a notable Swiss mechanical movement, produced from 1976 to 1983, and widely used in ladies’ watches due to its compact size and reliable performance. This movement is highly regarded for its indirect minute drive, which allows for a larger balance and mainspring barrel, improving accuracy and power reserve.
Key Features
17 jewels for smooth operation and durability.
Indirectly driven minute hand for better balance and increased runtime.
Nickel annular balance wheel for stable timekeeping.
Pallet lever escapement for consistent performance.
Incabloc shock protection for added resilience.
Clockwise balance direction and moveable stud for precise adjustment.
Yoke winding system for efficient manual winding.
Technical Details
Diameter: 7 3/4” (approximately 17.2mm).
Frequency: 21,600 vibrations per hour (3 Hz).
Production period: 1976–1983.
Setting lever spring: 2 holes.
Bulletin Points
17-jewel movement for reliability.
Indirect minute drive for improved power reserve.
Nickel annular balance for stable timekeeping.
Incabloc shock protection.
Manufactured between 1976 and 1983.
The ETA 1721.1 stands out for its innovative design and enduring reliability, making it a favorite among vintage watch collectors and restorers. Its technical features and historical significance continue to make it a respected movement in horology.
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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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