Greater efficiency for increased longevity
Back in 1948, Eterna astonished the watchmaking world with its ball baring-mounted low-friction rotor system for self-winding movements, known as the "Eterna Matic".
Between 2007 and 2009, a team of engineers, designing engineers and watchmakers buckled down to make news with the same principle, this time involving a ball bearing-mounted barrel.
At the heart of every mechanical movement lies its energy storage and delivery system, called the barrel. It contains and controls the mainspring whose winding and slow unwinding drives the movement, generating extreme friction and tension in the process. This centuries-old system has
|now been vastly improved by the inclusion of strategically positioned ball bearings fitted with tiny but self-lubricating zirconium-oxide spheres. Called Eterna Spherodrive, these bearings allow the various parts involved to rotate much more smoothly, generating far less wear and tear and markedly improving the watch’s overall performance|