Eterna

With a history dating back to 1856, Eterna has consistently pioneered watchmaking innovations, most notably the revolutionary Eterna-Matic rotor bearing system using tiny ball bearings, which transformed automatic movement reliability. The brand invented the side-mounted rotor, leading to the development of ultra-thin automatic movements. Their KonTiki collection, named after Thor Heyerdahl's famous expedition, represents their expertise in robust sports watches. Today, Eterna continues to innovate in movement manufacturing through their subsidiary, ETA, while maintaining their reputation for technical excellence and reliability.


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[WTS] Eterna Sonic Electronic, cal. 1550, ref. 488T, circa 1969

Eterna Sonic Electronic, cal. 1550, ref. 488T, circa 1969

Eterna - 488T ยท $565
A vintage Swiss tuning-fork watch from the late 1960s, powered by Eterna's Cal. 1550 electronic movement.

  • Condition: Excellent original condition (near-mint)
  • Case Diameter: 36mm
  • Lug Width: 18mm
Posted at
Feb 9, 2026, 12:31 PM
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