The ETA 2776 is a reliable automatic mechanical watch movement from the Swiss manufacturer ETA, produced in large quantities between 1969 and 1982, with over 25 million units made. Closely related to the ETA 2770, it features a sweep second hand and optional hacking mechanism, making it a workhorse for mid-range vintage timepieces. This caliber belongs to ETA’s 2700 series, early predecessors to the iconic 2824-2 framework that defined modern automatics.
Key Specifications
Type: Self-winding automatic with sweep seconds.
Production Era: 1969–1982, high-volume output for affordability.
Dimensions: Approximately 11.5 ligne (25.6mm diameter), slim profile for dress watches.
Jewels: 17–25, depending on variant, reducing friction for longevity.
Frequency: 21,600 vph (3 Hz), balancing power and smoothness.
Power Reserve: Around 40–45 hours when fully wound.
Design and Features
The ETA 2770/2776 shares a bidirectional rotor for efficient winding and robust construction suited to daily wear. Its optional hack stops the seconds hand for precise time-setting, a feature prized in vintage repairs. Incabloc shock protection enhances durability against impacts. Variants supported date windows, appealing to brands like Omega and Tissot in entry-level models.
Historical Significance
Produced during ETA’s expansion under Swatch Group precursors, the 2776 powered countless Swiss watches, bridging post-quartz crisis recovery. Today, it’s collectible for restorers due to abundant spare parts availability. Accuracy typically holds -10/+30 seconds per day unregulated, often tunable to chronometer levels.
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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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