Our Take

Celebrating its 15th anniversary, Armin Strom is flexing its technical capabilities with an all-new release at Geneva Watch Days 2024. A reimagining of the brand’s most significant technical contribution to watchmaking, the resonance complication, this is the Dual Time GMT Resonance in 39mm, white gold case.

First recognized by Galileo, the concept of resonance has deep roots in timekeeping. Christiaan Huygens played with early notions of resonance in clocks. Janvier Antide and Abraham-Louis Breguet continued experimentation later with clocks, while the latter even tried to miniaturize resonance dynamics in pocket watches. Armin Strom pulls heavily from historical experiments to develop its own approach to fostering the positive effects of resonance on chronometry. The Dual Time GMT Resonance utilizes a patented, built-for-purpose suspension system known as a “clutch spring”, inspired by Antide Janvier’s Resonance Clock, to act as a vibrational intermediary between the balance wheels. This contrasts against the more common approach to resonance – allow the vibrations to transmit through the base plate. The clutch spring approach creates much more resilience, minimizing dissipation and oscillation rate errors that are common through active wrist motion, gravity, and temperature changes. In other words, this is a resonance complication built for everyday wear and tear.

Known for their open-worked movements, the Dual Time GMT Resonance is actually two independent movements in one watch. This is why we see two crowns, two dials, two balance wheels, two 42-hour mainspring barrels, two completely separate gear trains – each movement is a synchronized, mirror image of each other. Each dial features a subdial with engraved, rhodium-plated day-night indicators.

From a finishing perspective, quality matches that of the technical complexity of the timepiece’s movement and complication. We see lavish hand-finishing and decoration on this caliber, including hand-polished bevels, screws and countersinks, along with circular graining, perlage and Geneva stripes. The juxtaposition of anthracite and silvery tones further emphasizes the visual depth and dramatic contrast. Limited to 25 timepieces, the Dual Time GMT Resonance is a major addition to Armin Strom’s catalog.

The Details

Indications:

• Two independent time displays each indicating hour, minutes and day/night
• Left crown for setting time of left dial; right crown for setting time of right dial and winding

Movement:

• Armin Strom manufacture Caliber ARF22
• Anthracite PVD-colored main plate

Winding mechanism: Manual winding

Regulating system: Two independent regulating systems connected by a resonance clutch spring

Power reserve: 42 hours

Dimensions: 34.15 mm × 4.92 mm

Frequency: 3.5 Hz (25,200 vph)

Jewels: 40

Number of components: 231

Case:

• 18-karat white gold
• Sapphire crystal and case back with anti-reflective treatment

Diameter: 39.00 mm

Height: 9.05 mm

Water resistance: 5 ATM

Dial: Sky-blue grenage dials with black azurage chapter rings and applied polished baton indexes, rhodium-plated day/night discs

Hands: Rhodium, faceted and polished

Strap: Delivered with two straps – a matte-gray alligator strap with sky-blue stitching and a light-gray alligator strap with pearl-gray stitching – with 18-karat pin buckle

Limited to 25 pieces