Ref. ST22-GEF.JG.CR.M.N1

Gravity Equal Force Jungle Green

CHF 22'900

An unprecedented feat of micromechanical ingenuity with a singular design made even more spectacular by an artisanally crafted dial, the Gravity Equal Force Jungle Green features a striking jungle-green guilloché dial by Kari Voutilainen, with a Grain d’orge horizontal pattern that follows the lines of the three bridges, paired with a matte black movement plate.

Entirely visible from the dial side, the Gravity Equal Force has a constant force transmission integrated directly in the mainspring barrel. The result is consistent power transmission to the regulating organ, ensuring unwavering precision throughout the watch’s autonomy.

Ask for more information
Category: SKU: ST22-GEF.JG.CR.M.N1

Always seeking superior chronometric performance and more consistent isochronism, the Gravity Equal Force distinguishes itself as the first-ever watch to feature a stop-work declutch mechanism in an automatic winding movement. Incorporated directly into the mainspring barrel, this ingenious solution provides more consistent power delivery to the regulating organ at every stage of the movement’s autonomy.

Befitting its innovative, highly structural and superlatively hand-finished movement, the Gravity Equal Force’s design is coherent – inside and out. Familiar forms take on new shapes and proportions that highlight the mechanical marvel within, constructed with a slim bezel and lugs profile that allows as much depth and detail as possible from the architectural movement to be admired from all angles.


True to Armin Strom’s singular approach of always showing the inner workings of mechanical watchmaking on the dial-side, the Gravity Equal Force highlights its unique automatic winding mechanism with an efficient micro-rotor from the dial side. Subtle yet legible, a power reserve indicator is integrated directly onto the mainspring barrel and its ingenious stop-work declutch mechanism.

Adding a touch of traditional craftsmanship to an innovative and outstandingly designed watch, this Gravity Equal Force features a guilloché engraved dial in a modern and vibrant jungle-green colour that contrasts strikingly against the matte black movement plate. The dial is handcrafted by renowned independent watchmaker Kari Voutilainen’s atelier, using a manual rose engine lathe.



Stop-Work declutch mechanism and Equal Force Barrel
Handmade guilloché pattern on the dial by Kari Voutilainen
Matt black PVD-coated movement plate

Stainless steel
Sapphire crystal and case back with anti-reflective treatment
Diameter: 41.00 mm
Height: 12,65 mm
Lug-to-Lug: 48.09 mm
Water-resistance: 30 m

Jungle green colored hand guilloche by Kari Voutilainen, off-center dial with subdial

Steel with hand finishing and Super-LumiNova® filling

Delivered with a black alligator leather strap with black stitching
Width lugs/buckle: 20/18 mm

Pin buckle or Folding clasp available in stainless steel


All Variations