Caliber 3945A

Một số mẫu thân máy của Đồng hồ Eterna-caliber-3945a.jpg

Automatic; ball bearing mounted spring barrel and rotor; single spring barrel, 68-hour power reserve

Functions: hours, minutes, sweep seconds; additional 24-hour indicator (second time zone); date

Diameter: 30 mm

Height: 5.9 mm

Jewels: 38

Balance: glucydur

Frequency: 28,800 vph

Balance spring: flat hairspring

Shock protection: Incabloc

Caliber 3843

Một số mẫu thân máy của Đồng hồ Eterna-caliber-3843.jpg

Automatic; ball bearing mounted spring barrel and rotor; single spring barrel; 72-hour power reserve

Functions: hours, minutes, sunsidiary seconds; second time zone (additiional 24-hour display); date

Diameter: 30.4 mm

Height: 6.1 mm

Jewels: 26

Balance:
glucydur

Frequency: 28,800 vph

Caliber 3510

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Manually wound; 2 ball bearing mounted spring barrels; 291-hour power reserve

Functions: hours, minutes, sweep seconds; power reserve display

Dimension: 27.2 x 33.2 mm

Height: 606 mm

Jewels: 22

Balance: glucydur

Frequency: 28,800 vph