Citizen Original-Ersatzteil – Zugfeder (Mainspring / Aufzugsfeder, ぜんまい) – Größe 8 ¾''' (1,40 × 0,085 × 245 mm) – NOS (1 Stück) Taucheruhr The airtight cap reliably protects

The airtight cap reliably protects the nib from drying out

The watch is powered by the modern 6R55 automatic movement with a power reserve of up to 72 hours – three full days of mechanical autonomy

Date of manufacture: May 1975

Gehäusematerial: 316L Edelstahl

Architektur und urbanem Minimalismus – Elemente

Citizen Original-Ersatzteil – Zugfeder (Mainspring / Aufzugsfeder, ぜんまい) – Größe 8 ¾''' (1,40 × 0,085 × 245 mm) – NOS (1 Stück) Taucheruhr The airtight cap reliably protectsOriginal Citizen spare part mainspring (Japanese zenmai) from unused old stock (NOS). Offered is a single mainspring in original Citizen packaging with the historical "CITIZEN MAINSPRINGS" emblem. The mainspring is the energy reservoir of the mechanical movement: wound in the barrel (), it is tensioned via the crown and drives the entire gear train as it unwinds. As a central power source and wear part, it fatigues over time, can take a permanent set,