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Armin Strom, the independent Swiss watchmaker renowned for its openworked designs and mechanical innovation, proudly unveils two striking new additions to its System 78 collection: the Orbit Lime Green and Orbit Ice Blue.
These limited edition timepieces—each restricted to just 20 pieces worldwide—introduce vibrant new fumé dials that blend bold aesthetics with technical mastery. The Lime Green model radiates energy and modernity, while the Ice Blue version offers a serene and sophisticated presence. Both dials feature a gradient effect that transitions from vivid color at the center to deep black at the edges, enhancing the visual depth of the openworked design.
A World-First Date Display on Demand
At the heart of both models lies the Armin Strom Manufacture Caliber ASS20, the world’s first movement to feature a date display on a ceramic bezel that appears only when activated. A pusher at 10 o’clock engages the date hand, which points to the current date and advances automatically at midnight. A second press returns the hand to its neutral position, offering a playful yet practical complication powered by a column-wheel mechanism.
The movement also incorporates Armin Strom’s patented Equal Force Barrel, delivering consistent energy for a stable 72-hour power reserve.
Haute Horology Craftsmanship
Each Orbit model is meticulously hand-finished at Armin Strom’s Manufacture in Biel/Bienne, employing traditional techniques such as anglage, perlage, and circular graining. The off-center dial is paired with rhodium-coated hands enhanced with Super-LumiNova®, ensuring legibility and elegance. The watches are housed in a stainless steel case with a fixed ceramic bezel and come with a matching bracelet featuring a double-folding clasp.
The Science of Movement
Founded in 1967 and revitalized in 2009, Armin Strom continues to push the boundaries of horological innovation. Every timepiece is designed, developed, and assembled in-house, reflecting the brand’s commitment to transparency, craftsmanship, and mechanical excellence.
| Functions | Hours, minutes, seconds, power reserve indicator, Column-wheel date on demand, patented equal force barrel |
|---|---|
| Movement | Calibre: ASS20, automatic with micro rotor Jewels: 30 Components: 273 Power reserve: 72 hours (Geneva stop-work) Frequency: 3.5 Hz / 25,200 vph |
| Dial | Off-center, indexes with Super-LumiNova® filling Lime green fumé/Ice blue fumé |
| Hands | Rhodium, facetted and polished with Super-LumiNova® filling |
| Case | Material: stainless steel, fixed ceramic bezel Diameter: 43.4 mm Height: 12.6 mm Lug-to-Lug: 44.35 mm Crystal: Sapphire crystal and case back with anti-reflective treatment Water-resistance: 5 ATM |
| Bracelet | Stainless steel with double-folding clasp |
| Reference | Lime Green: ST25-OR.05 Ice Blue: ST25-OR.21 |
| Limited Edition | 20 pieces each |
