Dual Time GMT Resonance Manufacture EditionLimited / 50 pieces, 2025

Name: Armin Strom Dual Time GMT Resonance Manufacture Edition ST25-DT.90
Brand: Armin Strom
SKU: ST25-DT.90

Ref. ST25-DT.90

2025–present · 39mm · caliber Armin Strom Cal. ARF22: manual-wind, in-house, dual-time GMT resonance movement; two independent regulating systems linked by the patented Resonance Clutch Spring, each driving its own hour/minute/day-night display; 25,200vph, 40j, 231 parts, two independent barrels, 42h PR; hour and minute hands on each side independently adjustable, including to fractional-hour offsets from GMT

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GPHG 2025EnteredException Mécanique category

Entry to the Grand Prix d'Horlogerie de Genève is voluntary and made by the brand. An entry is a watch registered for that year's competition, not a jury verdict, and several large houses including Rolex, Patek Philippe and Omega do not take part at all.

Limited · 50 piecesOfficial press photos

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Exception Mécanique, GPHG 2025

The Exception Mécanique category at GPHG 2025 held 13 entries. These are the other 12.

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Movement tier: unclassified · caliber Armin Strom Cal. ARF22: manual-wind, in-house, dual-time GMT resonance movement; two independent regulating systems linked by the patented Resonance Clutch Spring, each driving its own hour/minute/day-night display; 25,200vph, 40j, 231 parts, two independent barrels, 42h PR; hour and minute hands on each side independently adjustable, including to fractional-hour offsets from GMT · 42h power reserve

Versatile size: fits most wrists (6–7.5 in / 15–19 cm)

39 mm case. The sweet spot for the broadest range of wrist sizes. Neither too dainty nor too bold.

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