Description
Armin Strom Gravity Equal Force Ultimate Sapphire Salmon
The Armin Strom Gravity Equal Force Ultimate Sapphire Salmon represents a refined evolution of one of contemporary independent watchmaking’s most technically accomplished platforms. Presented within the System 78 collection, this edition combines Armin Strom’s patented constant force engineering with a newly introduced salmon-toned PVD mainplate, offering a distinctive aesthetic that remains grounded in mechanical purpose.
Housed in a compact 41 mm stainless steel case, the watch balances modern proportions with architectural clarity. A transparent sapphire dial reveals the movement beneath, allowing the intricate construction and layered finishing to take centre stage. The off-centre time display reinforces Armin Strom’s design language, while maintaining exceptional legibility through facetted, polished hands filled with Super-LumiNova®.
At the heart of the watch lies the manufacture Calibre ASB19, a landmark movement within independent horology. Its patented equal force barrel with stop-work declutch mechanism delivers constant torque to the balance wheel across the full 72-hour power reserve. Paired with an automatic micro rotor, the movement achieves both consistent timekeeping and a slender profile, all while remaining fully visible from both sides of the case.
Hand-finishing is integral to the Gravity Equal Force Ultimate Sapphire Salmon. Every component of the movement is decorated in-house at Armin Strom’s Biel/Bienne manufacture, featuring polished and bevelled bridges, black polished screws, Geneva stripes, circular graining, and perlage. The salmon PVD mainplate, hand-guillochéd in collaboration with Kari Voutilainen, adds depth and texture rarely seen in modern automatic movements.
The watch is paired with a grey nubuck leather strap, complemented by matching stitching and keepers, and secured by a stainless steel folding clasp. This understated pairing allows the movement and case architecture to remain the focal point, reinforcing the watch’s refined yet technical character.
Produced in a limited series of just 25 pieces per year, the Gravity Equal Force Ultimate Sapphire Salmon stands as a statement of Armin Strom’s commitment to mechanical innovation, transparency, and traditional hand craftsmanship, presented through a striking and thoughtfully executed colour palette.
Technical Specifications
- Case: Stainless steel
- Crystal: Sapphire crystal and sapphire case back with anti-reflective treatment
- Water Resistance: 3 ATM
- Diameter: 41 mm
- Height: 12.65 mm
- Lug-to-Lug: 48.09 mm
- Dial: Grey-toned off-centre sapphire crystal with subdial
- Hands: Rhodium, facetted and polished with Super-LumiNova®
- Strap: Grey nubuck leather strap with grey stitching and keepers
- Clasp: Stainless steel folding clasp
- Limited Edition: 25 pieces per year
- Movement: Armin Strom Manufacture Calibre ASB19
- Indications: Hours, minutes, seconds, power reserve indicator
- Winding: Automatic with micro rotor
- Functions: Patented equal force barrel, offset display, subdial seconds
- Regulating System: Balance wheel with four regulating screws
- Mainplate: Salmon PVD with hand-guilloché pattern by Kari Voutilainen
- Power Reserve: 72 hours with Geneva stop-work
- Frequency: 3.5 Hz (25,200 vibrations per hour)
- Jewels: 28
- Components: 202






















