Armin Strom One Week Manufacture Edition Blue ST25-OW.05

The art of precision, elevated in blue

At Armin Strom, mechanical transparency is not a design effect — it’s a philosophy. With the One Week Manufacture Edition Blue, the Biel-based manufacture reinterprets its very first in-house calibre, the foundation of its technical and creative independence. This timepiece embodies everything that defines Armin Strom: architectural symmetry, open mechanics, and immaculate hand-finishing.
Encased in a 41 mm stainless steel case with an integrated steel bracelet, the One Week Manufacture Edition Blue combines sculptural design with ergonomic comfort. Its deep blue mainplate, achieved through PVD treatment, replaces the traditional dial — turning the movement itself into a stage for mechanical ballet. Every wheel, gear, and bridge contributes to a perfect equilibrium that captures both light and motion.

At its core lies the ARM21 calibre, a manually wound movement featuring twin barrels mounted in series, delivering an impressive seven-day power reserve. Beating at 3.5 Hz, it ensures exceptional chronometric stability. The three-dimensional power reserve indicator, inspired by classic pocket watches and driven by a conical gear system, offers a poetic display of energy in motion.

True to Armin Strom’s haute horlogerie standards, every component is finished and decorated by hand: polished bevels, circular graining, Côtes de Genève, and blued screws — each detail reflecting uncompromising craftsmanship. Every movement is assembled twice, a rare practice that guarantees both visual and mechanical perfection.

Limited to just 100 pieces worldwide, the One Week Manufacture Edition Blue stands as a modern expression of Armin Strom’s ongoing pursuit of mechanical innovation and artistic integrity — a watch conceived for time, and crafted to endure.