Armin Strom’s latest resonance watch looks less like a conventional travel watch and more like a mechanical observatory for the wrist. The Dual Time GMT Resonance Aventurine turns one of independent watchmaking’s most intriguing technical ideas into a 15-piece limited edition with a dial that genuinely earns the night-sky comparison.
The watch, reference ST26-DT.CT, keeps the brand’s dual-time resonance architecture but gives it a more atmospheric setting through deep blue-black aventurine glass, rose gold-coloured movement tones and a compact stainless steel case.
Aventurine gives the twin displays a celestial backdrop
Aventurine is often treated as a poetic dial material, but here it does useful visual work as well.
The sparkling glass surface sits behind two black azurage chapter rings, separating the local and home-time displays without making the dial feel overly partitioned.
Applied rose gold-coloured polished indexes add warmth and clarity, while polished and blackened steel day and night discs bring a practical travel-watch function to each time display.
It’s a clever balance, because the aventurine gets to carry the mood of the watch while the open architecture still reminds you that this is very much an Armin Strom.
Calibre ARF22 makes resonance the main event
Inside is the manually wound calibre ARF22, an in-house movement built around Armin Strom’s patented resonance clutch.
The system links two independent regulating organs so the balance wheels can settle into sympathetic motion, a physical effect intended to improve rate stability by helping the paired regulators resist outside disturbance.
That technical story is visible from the dial side, where the twin balances, open movement layout and mirror-polished bridge create the kind of spectacle that doesn’t need animation or theatre beyond the mechanics themselves.
The calibre runs at 3.5 Hz, or 25,200 vibrations per hour, and offers a 42-hour power reserve from a movement made of 231 components and 40 jewels.
At 34.15 mm wide and 4.92 mm thick, the ARF22 is notably slim for a movement carrying two regulating trains and a dual-time display.
Finishing that plays warm metal against dark glass
The finishing is just as important as the mechanism, because this watch exposes so much of its construction from both sides.
On the dial side, a mirror-polished balance bridge with hand-bevelled edges contrasts against the rose gold-coloured mainplate, while rhodium-coated and steel components add cooler metallic notes.
Hand-polished bevels, black-polished parts, circular graining and perlage keep the view from feeling flat, even with the strong visual pull of the aventurine.
Through the caseback, Côtes de Genève on the gear-train bridges continue the warm tone and give the movement a more traditional counterpoint to the open dial-side architecture.
A restrained steel case for a complex watch
The stainless steel case measures 39 mm across, 44.5 mm lug to lug and 9.05 mm thick, which is refreshingly measured for a watch with this level of mechanical density.
Steel is the right choice here, allowing the aventurine and rose gold-coloured movement details to stand out rather than fighting against a precious metal case.
Sapphire crystals front and back receive anti-reflective treatment, and the watch is rated to 5 ATM of water resistance.
A matte grey alligator strap with grey stitching and a stainless steel pin buckle keeps the overall tone contemporary and relatively restrained.
Fifteen pieces for collectors who want the physics on display
The Armin Strom Dual Time GMT Resonance Aventurine is limited to 15 pieces and priced at CHF 105,000.
That places it firmly in serious independent horology territory, but the appeal is easy to understand for collectors drawn to genuine mechanical experimentation rather than decorative complexity alone.
This is a travel watch in function, a resonance demonstration in construction and a piece of aventurine theatre in presentation, which is exactly the sort of combination that makes Armin Strom compelling at its best.
