The ETA 2816 is a reliable manual-wind movement from ETA’s 2800 family, known for its compact design and high-beat performance in vintage and mid-range Swiss watches. Produced since the 1980s, it operates at 28,800 beats per hour (bph) for smooth seconds hand sweep, making it a precursor to popular automatics like the 2824.
Key Specifications
Size: 11.5 lignes (25.6mm diameter, ~4.6mm thick), ideal for smaller cases.
Jewels: 17, reducing friction for longevity.
Functions: Time-only (hours, minutes, small seconds); no date variants in core 2816.
Power reserve: Approximately 40-45 hours when fully wound.
Frequency: 28,800 bph (4Hz), balancing accuracy and durability.
History and Development
ETA developed the 2816 as part of the 2500/2800 series in the 1960s-1980s, evolving from earlier high-beat calibers like the 2732. It shares DNA with the workhorse 2824 but prioritizes manual winding for purists. Phased out post-2021 amid Swatch Group restrictions, it’s now scarce, boosting demand for serviced originals or clones like Sellita equivalents.
Applications and Reliability
Found in brands like Tissot, Longines, and Certina dress watches during its run, the 2816 excels in serviceability with interchangeable parts across the 2800 family. It offers solid accuracy (±12-20 seconds/day unregulated) and resists magnetism better than older ETA manuals. Enthusiasts praise its robustness for daily wear, though servicing every 5 years is advised.
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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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