We are great admirers of Armin Strom and their passion for skeletonised watches and love of creating innovative timepieces.

Gravity Equal Force is the newest watch demonstrating an Armin Strom core principle: always be innovating. This watch takes the traditional mainspring barrel and turns it on its head by adding a stop-work declutch mechanism combined with automatic winding to create consistent power delivery to the balance. 

The inspiration behind Gravity Equal Force was a desire to transmit equal force to the balance, thereby increasing the consistency of rate. Building upon the classic stop-works mechanism, Armin Strom developed an ingenious stop-works declutch system that operates inside the mainspring barrel to limit the torque delivered to the balance, providing smooth power delivery. This represents the first time a stop-works declutch mechanism has been added to an automatic winding movement.

Not content with one innovation, Armin Strom found insight in a pocket watch in need of repair from a U.S. collector, which contained a motor barrel design showing clear advantages over the standard going barrel. Inspired, the watchmakers designed a barrel operating in the reverse of a traditional mainspring barrel by driving the going train via the barrel arbor and winding the barrel housing, which both improves functionality and reduces wear.

We have reinvented the whole functionality of an automatic watch movement to bring another level of precision and to offer our collectors more assurance for reliable daily wear.” 

Claude Greisler, Co-founder of Armin Strom

Technical specifications: Gravity Equal Force
Ref. RG19-GEF.85.AL.M.35

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: 18ct rose gold
Sapphire crystal and case back with anti-reflective treatment
Diameter: 41 mm 
Height: 12,65 mm
Water resistance: 3ATM
Dial: Offset with subdial
Hands: Manufactured by Armin Strom – rose gold with hand finishing
Straps: Delivered with a genuine black alligator leather strap and 18ct rose gold ardillon buckle. A 18ct rose gold double-folding clasp is an option.

Price: CHF 26,900

For more information please visit Armin Strom

Leave a Reply

Your email address will not be published. Required fields are marked *

You may also like

Linde Werdelin Pushing The Lume Boundaries

We are delighted to bring you exclusive images