The ETA 2858 is a reliable manual-wind mechanical movement from the Swiss manufacturer ETA, part of the 2800 series produced since the 1970s. Known for its precision and bilingual day-date complications, it powers numerous vintage watches with a classic sweep seconds hand. This caliber emphasizes economical design while maintaining high standards, making it popular among collectors and repair specialists.
Key Specifications
Size and Build: 11.5 lignes (25.60mm diameter), 4.15mm thickness, 17 jewels.
Frequency: 28,800 vibrations per hour (4 Hz) for smooth operation.
Power Reserve: Approximately 50 hours when fully wound.
Functions: Hours, minutes, sweep seconds; quickset bilingual day (2 languages) and date at 3 o’clock with instant change.
Features and Reliability
The movement includes Incabloc shock protection and supports hand-winding without hacking. Its slim profile fits diverse case sizes, from dress to sports watches. Compared to automatic siblings like the 2878, the 2858 offers simplicity for manual enthusiasts, with shared dial feet for easy swapping.
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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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