The ETA 2681 is a reliable automatic mechanical movement from ETA, ideal for ladies’ watches and compact designs.
Overview
Introduced around 1981 as part of the ETA 2600 family, the Caliber 2681 belongs to the “Mecaline” line and remains in production. It serves as a slightly larger variant of the ETA 2671, measuring 19.4 mm in diameter (8¾ lignes) and 4.8 mm thick. Brands like Longines (as Cal. L580) and Rado have adopted it in models such as the D-Star Ceramos Automatic.
Key Specifications
Jewels: 25, reducing friction for longevity.
Frequency: 28,800 beats per hour (A/h) for smooth seconds hand sweep.
Power Reserve: Approximately 44 hours when fully wound.
Winding: Bi-directional automatic with central rotor and ball-bearing.
Height: 4.80 mm, suiting slim cases.
Features and Functions
This movement includes central hour, minute, and seconds hands, plus a date complication at 3 o’clock with quickset correction and semi-instantaneous change. It features hacking seconds for precise time-setting, an ETACHRON escapement, flat hairspring, and eccentric regulator. The balance sits at 10:30 with a counter-clockwise cock.
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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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