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Oster Jewelers will be closed Sunday, April 7 - Tuesday, April 23, 2024. Re-Open Wednesday April 24.
Oster Jewelers will be closed Sunday, April 7 - Tuesday, April 23, 2024. Re-Open Wednesday April 24.

Armin Strom Pure Resonance Ultimate Sapphire x Horomariobro | LE10

$ 65,900.00
SKU ST17-RP.SA - Horomariobro
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**Email to reserve one of the 10 pieces**

The creative watch collector @Horomariobro, dubbed the" King of Macro photography" on Instagram had the desire for Armin Strom to create a unique piece. The result - the Pure Resonance Ultimate Sapphire with a sapphire dial, a highly symmetrical design with exquisite hand decorations - turned out so visually striking that it was decided to share it with an exclusive few. Ten pieces will be available exclusively through Oster Jewelers, who was also involved in this special collaboration.

 “I always loved the idea of having an Armin Strom Resonance timepiece in my collection,” said US West Coast-based watch collector known as @horomariobro on Instagram, who dives deep into haute horlogerie details with his camera. His near-microscopic approach separates the wheat from the chaff when it comes to haute horlogerie finishes and has given him a revered position among collectors, not to mention tens of thousands of followers on Instagram. 

It has also made him a long-time friend of Armin Strom’s retail partner Oster Jewelers in Denver, a pioneering and passionate force for independent watchmaking brands like Armin Strom. Said founder Jeremy Oster: “After a series of conversations with @horomariobro, I reached out to Claude at Armin Strom, and together the three of us created the Pure Resonance Ultimate Sapphire – a sophisticated dream watch.” 

 “It was a very organic and creative collaboration, and sometimes you need a push from the outside to make radical changes that you wouldn’t dare to think about yourself, like removing the seconds,” added Armin Strom’s co-founder and master watchmaker Claude Greisler about the monochrome, highly technical timepiece with an extreme level of hand-made haute horlogerie decorations. “The end result was so nice that together, we decided to make a limited edition of 10 pieces.” 

“I always loved Armin Strom’s resonance approach from both a physics and a mechanical point of view,” said Horomariobro about the patented invention for improved precision and chronometric stability, developed by Greisler and his team. This is not only visually intriguing, but has also become a watch industry benchmark, as it delivers the fastest, best-performing and most shock-resistant resonance solution in the world. 

The 42-millimetre steel-cased Pure Resonance Ultimate Sapphire is the most minimalistic resonance timepiece made in Armin Strom’s fully integrated manufacture in Biel/Bienne. To fulfill Horomariobro’s wishes a sapphire dial has been applied, and the small seconds as well as Armin Strom’s historical lip on the case at 6 o’clock, have been removed. Even the logo is omitted, albeit for a subtle AS symbol engraved on a movement component. These radical reductions enhance the overall symmetry and highlights Armin Strom’s extreme in-house abilities for movement production and haute horlogerie decorations. Furthermore, the less-is-more approach enhances the kinetic marvel of the resonance clutch spring connecting the two balance wheels oscillating in resonance towards and away from each other.  MacroShots by @horomariobro, Instagram.

A limited edition of 10 pieces. Available exclusively at Oster Jewelers.
Ref. ST17-RP.SA

Hours, minutes
Two independent movements
Winding mechanism
Regulating system
Two independent regulation systems connected by a resonance clutch spring
25'200 vph / 3.5 Hz
Nb of Components
- 34.40 mm
- 7.05 mm
Power reserve
48 hours
- Two-independent regulation systems connected by a resonance clutch spring
- Stainless steel
-  Sapphire crystal and case back with anti-reflective treatment
42 mm 
12.25 mm
- Grey metallic sapphire dial ring
Manufactured by Armin Strom, steel with hand finishing and Super-LumiNova® filling
- Delivered with a black fabric strap with light grey stitching and stainless-steel double folding clasp

Listen to the Keeping Time with Oster Watches Podcast featuring an in-depth interview with design inspiration by @Horomariobro.

Oster Jewelers is an Authorized Armin Strom Watch Dealer