Dual Time GMT Resonance Rose Gold

Golden Synchrony: Dual Time GMT Resonance Rose Gold 

Two Time Zones, One Golden Standard.
Armin Strom expands its Dual Time GMT Resonance collection with a refined new edition in 18K rose gold. For the first time, the 39 mm case is crafted in this warm alloy, lending a new tonal depth to the model’s distinctive architecture. The rose gold coloured polished hands and applied indexes stand out against the black gold coloured grenage dial, framed by black azurage chapter rings that separate the two time zones. Paired with an anthracite alligator strap with grey stitching, this edition preserves the technical clarity of the original while offering a different visual interpretation of the same underlying philosophy. 

Resonance Across Time Zones.
At the heart of the watch is the manual-winding manufacture calibre ARF22, entirely designed, developed and produced in-house. Its defining feature is Armin Strom’s patented resonance clutch, which synchronises two independent regulating systems, allowing both time displays to oscillate in harmony. The continuous interaction of the two balance wheels creates a dynamic, three-dimensional kinetic display that brings the resonance mechanism to life. Each time zone features its own hours, minutes and day/night indicator, offering intuitive functionality for frequent travellers. Operating at 3.5 Hz (25,200 vph) with a 42-hour power reserve, the ARF22 transforms the resonance phenomenon into a functional complication. 

Finishing in Motion.
Visible through sapphire crystals on both sides, the movement reveals a rich landscape of traditional hand-finishing and mechanical engineering. On the dial side, the engraved and mirror-polished day/night indicators showing the sun and moon located at 6 o’clock of each dial. Hand-polished bevels, black-polished elements, circular graining and perlage enrich the architecture, while the back side features Côtes de Genève, further enhancing the movement’s refinement. Like all Armin Strom watches, the Dual Time GMT Resonance Rose Gold is assembled twice, ensuring both mechanical precision and flawless finishing. 

Limited to 50 pieces worldwide, the Dual Time GMT Resonance Rose Gold stands as a focused expression of Armin Strom’s independent watchmaking. 

Technical specifications:

Reference:

• RG25.DT.75 

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
  

Distinctions:

• Two independent regulation systems connected by a resonance clutch spring.
• Two independent time displays indicating hour, minutes and day/night.

Movement: 

• 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:

• 18K Rose gold
• Sapphire crystal and caseback with anti-reflective treatment 
• Diameter: 39.00 mm
  
• Height: 9.05 mm
  
• Lug-to-Lug: 44.50mm
• Water resistance: 5 ATM / 50 m
  

Dial:

• Black gold coloured grenage with black azurage chapter rings
• Applied rose gold coloured coated polished indexes
• Polished and blackened steel day/night discs 

Hands:

• Rose gold coloured coated, facetted and polished 

Strap:

• Matte grey alligator strap with grey stitching.
• 18K Rose gold pin buckle 

Edition:

• Limited to 50 pieces 

About Armin Strom

Armin Strom is an independent watch company based in Biel/Bienne, Switzerland. Armin Strom timepieces offer a unique fusion of the Swiss-German horological tradition, avant-garde “transparent mechanics” and an unwavering commitment to horological innovation. The hallmark of the brand’s low-volume, artisanal approach to watchmaking is its commitment to exposed dial-side movement mechanics, with every part hand-finished to the highest haute-horology standards.

Armin Strom was established in 1967 by Mr Armin Strom, a legend in the art of hand-skeletonization. In 2006, the stewardship of Mr Strom’s legacy became the responsibility of Master Watchmaker Claude Greisler and businessman Serge Michel, who together revitalized the brand with the opening of Armin’s Strom’s first fully-integrated Manufacture in 2009. Today the brand designs, develops, mills, embosses, galvanizes, hand-finishes and assembles all of its own watches in-house, enabling Armin Strom to bring even the most complicated ideas to life without any of the compromises that typically stem from reliance on a supply chain.

When ‘Mr. Armin Strom’ retired from watchmaking, he transferred ownership of his brand to two boys (by then adults) who had had frequented his workshop so often together in childhood: businessperson Serge Michel and Master Watchmaker Claude Greisler.

In 2009, the revitalized Armin Strom built upon Mr. Strom’s historical legacy with the opening of its first fully-integrated Manufacture; located in Biel, Switzerland.

Today the Manufacture produces all of our timepieces in-house and with great reverence for the Swiss-German watchmaking tradition. Our extraordinary team of dedicated engineers and artisans, led by Master Watchmaker Claude Greisler, uphold that tradition with uncompromising passion and commitment.

Serge Michel is the scion of one of the most prominent families in Switzerland. His unwavering passion and commitment to the business of the Armin Strom Manufacture have made him both the sponsor and the driving business force behind the brand.

Fascinated by watchmaking and watch collecting from a young age, he and his childhood friend Claude Greisler shared a dream of co-founding a watch company; one that would someday produce watches of the very highest quality in the Swiss-German tradition. Today that dream has become a longstanding reality.

Beyond his life in the Manufacture, Serge is a husband and proud father of two girls. His other passions include global travel and wine collecting. Nothing brings a bigger smile to Serge’s face than introducing the latest Armin Strom creation to good friends over a dinner paired with several bottles of fine wine.

Claude Greisler is “a watchmaker’s watchmaker.” His greatest passions are watches (past and present) and complicated watchmaking. In actual fact, watchmaking has been a Greisler family profession for generations. Claude’s training began in his grandfather’s workshop, which led to his formal training, beginning with his completion of a four year program at the “School for Watchmakers and Rhabilleurs” in Solothurn, Switzerland; followed by a two-year program in movement restoration at Centre Interrégionalde Formation des Montagnes [CIFOM] in Le Locle; and then a further two-year program at CIFOM focused on the development and construction of complicated timepieces. Upon the completion of his 8 years of watchmaking education, Claude honed his craft as a watchmaker at Christophe Claret (a brand known for its ultra-complicated timepieces) as the next step in his longstanding ambition: to dedicate himself to the design and production of horologically significant timepieces. Beyond his watchmaking obsession, Claude is also a passionate skier and outdoorsman. Together with his wife, Gaby, Claude explores the Swiss backcountry as often as his responsibilities at the manufacture will allow.

Manufacture

At Armin Strom, we’re obsessed with every detail of every watch that we make. We develop, mill, emboss, galvanize and hand-finish all of our watches in-house. We adhere to the very highest haute-horology standards because we know that Armin Strom collectors appreciate looking at more than just the time.

Hand engraving

Every piece is unique.

Steel burins in various sizes and wax-coated holders are the tools of the engraver.

In the engraver’s hands, each workpiece becomes a unique work of art. The engraver draws their own motif design on the workpiece with a needle according to their original drawings; working under the microscope.

Polishing

Embellishing every part of a movement makes every Armin Strom watch akin to a hand-crafted piece of jewelry.

Working bare brass or steel by hand is time-consuming work: edges of plates, bridges and levers must be perfectly chamfered or, as watchmakers call it, beveled. Every part is then polished to perfection, even when the embellishment won’t be visible in the finished watch.

Beveling and polishing requires a trained eye and fingertip sensitivity together with both patience and perseverance. For example, even a relatively small part like a pallets bridge will require at least half an hour to complete – and often more than that.

Traditional Grinding

Here a classic fine watch-making finishing technique known as “Geneva Stripes” (Côtes de Genève), is displayed. They’re created via the use an abrasive disc that’s applied in perfectly straight lines to create the Côtes de Genève on the workpiece.

Circular graining (Perlage) is a decorative motif reminiscent of clouds, typically used on main plates. To achieve this pattern, the watchmaker uses an abrasive pencil and gently makes contact with the workpiece, gradually wor­king across the whole surface. This creates the characteristic overlapping circular grained motif.

All rotating parts of an Armin Strom movement are embellished with a circular grinding pattern.

Assembling

Up to this point, they were all just individual parts – turned, milled, polished and decorated. Now the watch will begin to take shape.

The watchmaker uses a pressing tool to insert the jewel bearings for the spindles of the toothed wheels into the plate and bridges. This is a crucial operation. The way the jewels are pressed in influences the correct vertical play of the gear-train. Do the gear-wheels and pinions mesh together correctly? Does the height need adjusting by a few hundredths of a millimeter? Once the gear-train is adjusted, the bridges and plates are screwed down, and the mainsprings are assembled in the going barrels, then the movement is ready to receive the escapement. With the installation of the escapement, consisting of the escape-wheel, the pallets and balance-wheel, the watch comes to life.

After the first assembly, the movement is completely disassembled and each individual part is then cleaned, dried, reassembled and lubricated. After the second assembly, the movement is meticulously regulated before the watchmaker sets the hands and re-inserts the movement back into the case. The back of the case is then fixed in place. The completed watch is subjected to a multi-day rate test on a watch winder. Water resistance is also tested. Once the watch has passed these quality tests, it is finally certified as complete.