The Eterna-Matic 3000 movement family is the predecessor of today’s leading ETA 2890 family. It is a thin central-rotor automatic movement with day and date complications integrated with the basic movement. Introduced in 1962, it was a remarkably-thin movement for the time, measuring 3.60 mm, or 4.15 mm thick with day and date. Later versions operated at 21,600 A/h or 28,800 A/h. The design was thoroughly refreshed in 1975 as the new ETA Cal. 2890 and Cal. 2892.
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