Dual Time GMT Resonance Aventurine

The Armin Strom Dual Time GMT Resonance Aventurine (Ref. ST26-DT.CT) is powered by the in-house, manual-winding calibre ARF22, a highly technical movement built around two independent regulating systems connected by a patented resonance clutch. This mechanism allows the twin balance wheels to synchronise in resonance, enhancing chronometric stability through continuous interaction. Operating at 3.5 Hz (25,200 vph) with a 42-hour power reserve, the calibre comprises 231 components and 40 jewels, and drives two fully independent time displays, each with its own hours, minutes, and day/night indicator for intuitive dual-time functionality.


The open-worked architecture is prominently displayed on the dial side, where a mirror-polished balance bridge contrasts with a rose gold-coloured mainplate and hand-finished components featuring black polishing, perlage, circular graining, and Côtes de Genève. The technical landscape is framed by a 39 mm stainless steel case with sapphire crystals front and back, water-resistant to 5 ATM. An aventurine dial provides a ...shimmering, celestial backdrop, complemented by black azurage chapter rings, applied indexes, and rose gold-coloured hands. Finished with a grey alligator strap, the watch is produced in a limited edition of 15 pieces, underscoring its exclusivity.