Armin Strom Gravity Equal Force Ultimate Sapphire Goes Monochrome

Armin Strom Gravity Equal Force Ultimate Sapphire Goes Monochrome

Armin Strom, launch a rare and stunning new version of their milestone Gravity Equal Force timepiece. With its off-centre sapphire dial, the strikingly cool monochrome watch offers an extraordinary view of the exquisitely-finished manufacture movement.

Armin Strom’s Gravity Equal Force, launched in 2019, is the world’s first automatic watch with constant force transmission, which results in consistent power delivery to the balance. In short, it means that the watch always delivers flawlessly constant precision. Its ASB19 caliber offers a power reserve of 72 hours.

The timepiece stands out not only with its groundbreaking technology but by a design and craftsmanship that set it apart from every other watch. With the launch of the Gravity Equal Force Ultimate Sapphire, Armin Strom has reinforced its commitment to the transparent mechanics.

“We’ve re-imagined the Gravity Equal Force to more fully embrace our passion for transparent mechanics, while adding complementary aesthetic complexity that enhances the watch’s special visual impact.”

Claude Greisler, Co-Founder & Head Watchmaker, Armin Strom

The watch is distinguished in equal part by its technical and aesthetic innovations:  

  • The movement’s black plate guilloche pattern was created by hand by the celebrated Finnish watchmaker Kari Voutilainen, a close friend of Armin Strom’s founders. 
  • The off-center grey-toned sapphire dial offers an unobstructed view of the fascinating mechanics inside the case and emphasizes the brand’s passion for transparent mechanics, which are at the core of its design philosophy.
  • The bridges are coated with dark grey ruthenium; the barrel and the micro rotor are coated with rhodium.
  • The Gravity Equal Force’s ASB19 movement includes a “stop work” mechanism that prevents the mainspring from fully unwinding, thus leveraging only the part of the mainspring’s unwinding process that can deliver power most consistently. 
  • The steel hands with Super-LumiNova® filling are manufactured by Armin Strom and like all of the visible parts of the movement, are meticulously hand-finished in-house

“The special version of our GEF was extremely well received in early presentations to collectors so we hope to be able to produce 30 more watches next year in addition to the 15 from this year. That may, however, be too ambitious because our capacities are limited and it always has to be a rare piece, which is why we have decided that half of all future productions will be placed on a first-come/first-served waiting list for those who inquire via our website.”

Serge Michel, Founder, Armin Strom

Presented in a classic 41 mm stainless-steel case, the Armin Strom Gravity Equal Force Ultimate Sapphire comes with a black fabric strap with light grey stitching, subtly maintaining the watch’s resolutely cool monochrome color scheme. 

Technical specifications: Gravity Equal Force Ultimate Sapphire
Ref. AS/ID 

ST21-GEF.SA.VE.M.30

Indications: Hours, minutes, seconds, power reserve indicator 

Movement: Armin Strom manufacture Caliber ASB19
Automatic winding with micro rotor, Geneva-drive equal force barrel, offset display with subdial seconds 
Regulating system: Balance wheel with 4 regulating screws
Power reserve: Geneva stop-work limited to 72 hours
Dimensions: 35.52 mm x 11.67 mm 
Frequency: 3,5 Hz (25,200 vph)
Finishing: Hand-finishing to the highest quality level
Jewels: 28
Number of components: 202

Case: Stainless steel
Sapphire crystal and case back with anti-reflective treatment
Diameter: 41 mm 
Height: 12,65 mm
Water resistance: 3ATM

Dial: Grey toned off-center sapphire dial with subdial 
Hands: Manufactured by Armin Strom, steel with hand finishing and Super-LumiNova® filling

Strap: Delivered with a black fabric strap with light grey stitching and stainless-steel double folding clasp

Price: CHF 22,900 / EUR 20,000 / USD 22’900

For more information please visit https://arminstrom.com

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