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Armin Strom - Dual Time Resonance Sapphire

Armin Strom began research and development into using the phenomenon of resonance in a wristwatch with two main goals: the first that any resonant complication should demonstrably improve timekeeping precision, and the second that people should be able to visually appreciate the phenomenon of resonance (more about it in our article "In pursuit of precision: mechanical resonance and watches") as it happens.

With the new Dual Time Resonance Sapphire this second goal is achieved to the highest degree thanks to a crystal-clear sapphire crystal case (measuring 59 mm x 43.4 mm x 13 mm) offering views of the movement from all angles.

Armin Strom Dual Time Resonance Sapphire

The patented Resonance Clutch Spring – the result of three years of intensive research and development – connects two individual movements arranged horizontally side by side, each independently displaying two time zones and each synchronized with the other through resonance for improved chronometric precision. The CSEM (Centre Suisse d'Electronique et de Microtechnique) has officially certified Armin Strom’s Resonance Clutch Spring system as being a true system in resonance. Armin Strom’s laboratory testing has revealed gains in precision of 15-20% for two COSC-certified chronometer-level regulated movements placed in resonance.

Independent movements enable the Dual Time Resonance Sapphire to indicate GMT, a second time zone, or function as a timer or countdown. Completing the indications are independent power reserve indicators and a 24-hour indication serving both displays.

Armin Strom Dual Time Resonance Sapphire

Cutting, milling, polishing, and assembling a sapphire crystal case is very challenging due to extreme hardness of this material (it rates 9.0 on the Mohs scale and it is the third hardest mineral, after diamond at 10 and moissanite at 9.5).

Diamond-coated tools spend days cutting, then milling the case components from massive sapphire crystal blocks. These are then left for a few days to allow any tension generated by the heat of machining to be evenly distributed throughout the crystal. The case is then polished for days, transforming the opaque milled sapphire into a crystal clear one.


Armin Strom Dual Time Resonance Sapphire

The total transparency demands flawless finishes for the hand-wound caliber ARF17, as typical of the brand. Beating at the frequency of 3.5 Hz (25,200 vibrations per hour), the movement guarantees the impressive power reserve of 110 hours for each movement thanks to the four barrels, whose fascinating simultaneous winding can be appreciated by turning the watch.

Armin Strom caliber ARF17

Characterized by two different blue hues, the dials are enhanced by state-of-the-art guilloché decorations created in collaboration with renowned master watchmaker Kari Voutilainen and manufactured in his Môtiers-based workshop, on century-old engine-turning lathes, which can only be controlled by hand.


Matched to a blue alligator strap with stainless steel double-folding clasp, the Armin Strom Masterpiece 1 Dual Time Resonance Sapphire (ref. RGMT.11.AL.L.14.FC) launches in a limited edition of 8 pieces with a price of Swiss Francs 280,000. arminstrom.com


Armin Strom Dual Time Resonance Sapphire

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Time and Watches | The watch blog: Armin Strom - Dual Time Resonance Sapphire
Armin Strom - Dual Time Resonance Sapphire
SIHH 2019: Armin Strom launches the new Dual Time Resonance Sapphire (ref. RGMT.11.AL.L.14.FC) in a limited edition of 8 pieces with a price of Swiss Francs 280,000. The crystal-clear sapphire crystal case offers views of the movement from all angles.
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Time and Watches | The watch blog
https://www.timeandwatches.com/2019/01/armin-strom-dual-time-resonance-sapphire.html
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