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The "Midnight Purple" story continues at Armin Strom with a bold new chapter. This distinctive colour, deeply rooted in the history of the independent manufacture and inherited from founder Armin Strom himself, now extends beyond the dial and into the movement itself. Expressed through the newly released Orbit Midnight Purple, the signature midnight purple fumé dial remains at the centre of the composition, paired for the first time with a frosted midnight purple mainplate beneath to strengthen the visual connection between display and mechanics.
Powering the watch is the manufacture Calibre ASS20, developed and produced entirely in-house around the world's first on-demand date display on a ceramic bezel. This innovative mechanism rethinks the relationship between wearer and complication by displaying the date only when requested. Activated by a pusher at 10 o'clock, the date hand moves from its neutral position to indicate the current date on the bezel and advances automatically at midnight. A second press returns it discreetly to 12 o'clock, leaving the dial free from unnecessary information.
Beyond its avant-garde functionality, the timepiece focuses heavily on exceptional visual details. Hand-polished steel hands and applied hour markers are filled with Super-LumiNova®, complemented by signature numerals at 12 and 6 o’clock crafted from solid Super-LumiNova® blocks that create a striking visual presence after dark. Housed in a 43.4 mm stainless steel case framed by a black ceramic bezel, the timepiece is completed by a fully integrated stainless steel bracelet, delivering a cohesive fusion of modern sports-luxury and unique aesthetics.
Visible through the sapphire crystal and caseback, the movement highlights Armin Strom's dedication to transparent mechanics and haute horlogerie finishing. The purple mainplate creates a distinctive visual foundation, contrasting with rhodium-coated components and hand-finished finger bridges, while hand-polished bevels, perlage, and circular graining enrich every surface. To ensure both mechanical precision and finishing excellence, each watch is assembled twice. Limited to just 20 pieces worldwide, the Orbit Midnight Purple is one of the most recognisable and collectible expressions of the System 78 collection to date.







| Functions | Hours, minutes, seconds, column-wheel date on demand, patented equal force barrel |
|---|---|
| Movement | Calibre: Armin Strom Manufacture Caliber ASS20 Winding mechanism: Automatic winding with micro rotor Regulating system: Balance wheel with 4 regulating screws Main plate: Midnight Purple, frosted and PVD coated Jewels: 30 Components: 273 Power reserve: 72 hours Frequency: 3.5 Hz (25,200 vibrations per hour) Dimensions: 35.52 mm x 8.42 mm |
| Dial | Midnight Purple fumé, indexes 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 |
| Hands | Rhodium, facetted and polished with Super-LumiNova® filling |
| Strap / Bracelet | Material: Stainless steel bracelet Buckle: Double-folding clasp |
| Reference | ST26-OR.01 |
| Limited Edition | 20 pieces |