Eterna, a Swiss watch brand with roots dating back to 1856, stands for innovation and robust manufacturing. It rose to fame in 1948 with the revolutionary ball-bearing rotor of the Eterna-Matic, which made automatic watches more efficient. This was followed in the 1950s by the robust KonTiki diver's watch, inspired by Thor Heyerdahl's expedition. Despite changing owners, the brand remains synonymous with technical sophistication and timeless aesthetics—an often underrated icon of haute horlogerie.