Armin Strom Watches

Armin Strom occupies a distinctive position within contemporary independent Swiss watchmaking. Its watches are neither conventional classical dress pieces nor decorative skeleton watches created simply to expose as much of the movement as possible. Instead, mechanical architecture is deliberately designed to be visible from the beginning.

The company describes this approach as transparent mechanics. Bridges, barrels, balances, gear trains, winding mechanisms, and regulating systems are often placed on the dial side so the wearer can understand how the watch functions while observing it in operation. The visual architecture therefore follows the engineering rather than hiding it beneath a traditional dial.

The manufacture in Biel/Bienne is central to this identity. Armin Strom works from raw bars of metals including steel, brass, German silver, titanium, copper, and other alloys, then performs operations including movement design, milling, stamping, galvanizing, hand-finishing, and assembly internally. According to the manufacture, every movement is assembled twice: once for initial testing, then completely disassembled, cleaned, rebuilt, lubricated, regulated, and subjected to additional testing.

Hand-finishing is equally important. Traditional techniques include hand-beveling, polishing, black polishing, Geneva stripes, perlage, circular graining, frosting, and decorative engraving. Armin Strom notes that finishing certain components can take considerably longer than producing the raw part itself.

The most important technical signature of modern Armin Strom is Resonance.

Mechanical resonance occurs when two oscillating systems influence each other until their frequencies synchronize. Watchmakers have experimented with the phenomenon for centuries because two synchronized regulators can potentially produce greater rate stability. The challenge in a wristwatch is maintaining resonance despite movement, shocks, and changing positions.

Armin Strom addressed the problem through its patented Resonance Clutch Spring, first introduced in 2016 after years of development led by Claude Greisler. The spring directly connects two independent regulating systems, allowing their balance wheels to synchronize while making the resonant state substantially more resistant to external disturbances.

The Mirrored Force Resonance makes this mechanism visible on the dial side. Two balance wheels oscillate beside each other while the patented clutch links their hairsprings. Twin seconds displays provide a visible representation of synchronization, and a flyback mechanism allows both seconds hands to be reset simultaneously. Current versions use the manually wound ARF21 manufacture caliber and are generally produced in extremely small editions.

Armin Strom expanded the concept through the Dual Time GMT Resonance. Its ARF22 manufacture caliber uses two independent time displays, each with separate hours, minutes, and day/night indication. Because the hour and minute hands can be adjusted independently, the watch can display time zones with fractional-hour differences as well as conventional full-hour offsets. Two regulating organs remain synchronized through Armin Strom’s Resonance system.

At the extreme end of the collection sits the Minute Repeater Resonance 12:59. Introduced as a major technical development, it combines resonance with a four-hammer, four-gong minute-repeater mechanism. A special selector can trigger either conventional time striking or a 12:59 sequence—the longest possible striking sequence of the mechanism. The First Edition is housed in a 42mm titanium case and carries an official U.S. price above $500,000.

The second major pillar of Armin Strom is System 78, named for 1978, the shared birth year of Serge Michel and Claude Greisler. The collection is intended to offer the manufacture’s mechanical philosophy in relatively straightforward watches while still maintaining in-house movements and haute-horlogerie finishing.

The Tribute 1 represents the purest expression of this concept. Its compact 38mm case contains the manually wound AMW21 manufacture caliber. A distinctive motor barrel places the barrel arbor in motion around the mainspring rather than following the conventional configuration, while the movement provides approximately 100 hours of power reserve. The off-center time display and exposed finger bridge preserve Armin Strom’s recognizable architecture in a comparatively restrained dress watch.

More decorative Tribute references incorporate fumé dials and specialist guilloché work. Several limited editions have used dials created with the atelier associated with independent watchmaker Kari Voutilainen, demonstrating Armin Strom’s willingness to combine in-house mechanics with specialist artisanal collaborations.

The Gravity Equal Force addresses another fundamental mechanical-watch problem: a mainspring does not deliver the same amount of torque throughout its entire running period. Armin Strom developed a patented equal-force barrel incorporating a Geneva stop-work system designed to provide more consistent energy to the regulating organ. The automatic ASB19 caliber combines this system with a micro-rotor and approximately 72 hours of power reserve.

The Orbit approaches the date complication differently. Rather than maintaining a conventional date window permanently on the dial, Orbit models use an unusual date indication integrated into their mechanical architecture, reflecting the System 78 philosophy of reconsidering familiar watch functions instead of merely decorating them. Orbit references currently occupy a higher price tier within System 78.

The One Week is another major System 78 family. Its manually wound ARM21 caliber uses two barrels arranged in series to deliver a full seven-day power reserve. The movement is deliberately three-dimensional and almost entirely exposed, with the barrels, gear train, and conical power-reserve mechanism forming part of the visual composition. Contemporary One Week watches also offer relatively practical specifications including 100-meter water resistance on selected references.

Beyond System 78 and Resonance, Armin Strom periodically produces Masterpieces and highly complicated limited editions. These watches demonstrate the manufacture’s ability to combine resonance, striking mechanisms, tourbillons, dual-time functions, and elaborate hand-finishing in extremely low production quantities.

Materials vary by model and include stainless steel, titanium, rose gold, white gold, sapphire crystal, precious stones, aventurine, guilloché metal dials, alligator leather, Alcantara, nubuck, rubber, and integrated metal bracelets. Cases currently range from relatively compact 38–39mm dress and dual-time watches to larger 41–43mm architectural complications.

Production remains deliberately limited. Some references are restricted to just 10, 15, 25, 50, or 100 pieces, while selected models are produced in small annual series. This limited scale contributes to Armin Strom’s positioning as a collector-focused manufacture rather than a mainstream luxury producer.

Current official pricing starts around CHF 22,000 for selected Tribute 1 references, with U.S.-market versions commonly around $30,000. Gravity Equal Force and One Week models generally sit higher, while Mirrored Force Resonance and Dual Time GMT Resonance enter the high-five-figure and six-figure range. The 2026 Minute Repeater Resonance 12:59 First Edition is officially listed at $513,000.

Positioned firmly within independent haute horlogerie, Armin Strom Watches appeal to collectors seeking visible mechanical engineering, genuinely proprietary complications, extremely low production, intensive hand-finishing, and an alternative to more conventional Swiss luxury manufactures.