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Dual Time GMT Resonance

Armin Strom's travel-complication resonance line: two fully independent regulating systems, each driving its own hour, minute, and day/night display, linked by the same Resonance Clutch Spring that anchors the Mirrored Force Resonance. Each side can be set independently, including to time zones offset by fractional hours from GMT.

Year introduced: 20211 reference

References in this family

  • enthusiastmodernArmin 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 GMT39mm2025–present
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Dual Time GMT Resonance | Grail Atlas