The ETA 2678 is a reliable automatic mechanical watch movement from ETA, part of the Swatch Group’s Mecaline series, designed for compact ladies’ watches.
Key Specifications
Diameter: 7¾ lignes (17.2 mm), ideal for smaller cases.
Height: 5.35 mm, ensuring slim profiles.
Jewels: 25, reducing friction for longevity.
Frequency: 28,800 vph (4 Hz), balancing smoothness and power efficiency.
Power Reserve: 38-39 hours with bi-directional ball-bearing rotor.
Functions and Features
This calibre offers hour, minute, and central seconds hands, plus day-date complication with quickset date. It includes hacking seconds for precise time-setting and automatic winding via a bidirectional rotor. Based on the ETA 2671, it evolved for enhanced reliability in vintage and modern designs from 1971 onward.
History and Usage
Produced by Swiss manufacturer ETA, the 2678 stems from post-WWII innovations in compact automatics, related to early bumper-wind models like the 30.10 family. Commonly found in brands like Tissot or Certina ladies’ models, it powers elegant dress watches with 38-hour reserves. Spare parts remain available, supporting repairs for enthusiasts.
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Watch Parts Enquiry
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Stem, Crown, Hands & Spares might be available for this movement.
Email us for rate and availability: [email protected]
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