Armin Strom Dual Time Resonance Sapphire watch

Transparency is often a good thing. In regards to manufacturing and business operations, few would turn down the chance to learn more about how the industry functions behind the scenes. When literal transparency creeps into the products themselves, however, reactions are often more divided. SIHH 2019 sees the Armin Strom Dual Time Resonance Sapphire watch released. A highly complicated, extremely limited timepiece that builds on previous research into resonance as a route to isochronism, this latest model is sure to split opinion with its unusual appearance.

It’s not the first time we’ve reviewed a watch with a sapphire case on aBlogtoWatch. We expect this kind of material experimentation from brands like Hublot or Bell & Ross. We recently reviewed the Hublot Big Bang Unico Magic Sapphire here, for instance, and Bell & Ross released the Bell & Ross BR-X1 Skeleton Tourbillon Sapphire Watch in 2017. And there are more examples. We’re more used to seeing Armin Strom experiment with new materials inside the case, hence the increased interest in this new piece.

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Armin Strom Dual Time Resonance Sapphire movement


Brand: Armin Strom
Model: Dual Time Resonance Sapphire
Dimensions: 59mm x 43.4mm (including lugs)
Water Resistance: 50m
Case Material: Sapphire crystal
Crystal/Lens: Sapphire crystal front and back with AR coating
Movement: Armin Strom manufacture calibre ARF17
Frequency: 25,200vph (3.5Hz)
Power Reserve: 110 hours for each movement
Strap/Bracelet: Blue alligator strap and stainless steel double-folding clasp
Price & Availability: CHF 280,000

Armin Strom Dual Time Resonance Sapphire case


For me, the success of this model rests on the question of design congruity. The case, while not to my personal liking dimensionally, is well-executed and interesting. The dials are nicely finished and decorated with arresting shades of blue. Independently, there is no problem with either element, but combined the result is arguably jarring.

Armin Strom is trying to merge the best of both worlds: employing classic, artisanal dial finishing, and fusing it with a case material that looks like leftovers from an abandoned Skynet prototype. I like my timepieces to be a bit more “whole hog,” and therefore prefer the precursor: the Armin Strom Masterpiece 1 Dual Time Resonance watch. The black dials add a much needed dash of grit to proceedings that, in my opinion, marries better with the ice-cool sapphire case.

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Armin Strom Dual Time Resonance Sapphire


Maybe it’s harsh to focus on the aesthetics, when this watch’s horological credentials are so impressive. Boasting two movements, displaying two separate time zones, with each movement’s power reserve independently indicated, the Armin Strom Dual Time Resonance watch experiments with resonance to improve chronometric accuracy. The two movements are linked by a resonance clutch, which effectively irons out the slight erraticisms of each movement, acting like a tourbillon, but split across two balances.

Armin Strom Dual Time Resonance Sapphire dials

It is intriguing stuff – an old idea well-executed with modern materials. At 59mm wide, this watch will have a huge amount of wrist presence, but will likely wear as comfortably as similarly sized and shaped watches such as the also horizontally long HYT H3 which you can see on the wrist here. If you want one you’ll need to be quick, because there are only eight pieces of the Armin Strom Dual Time Resonance watch being made, and each one retails at a whopping price of CHF 280,000. Learn more at

Follow our pre-, post-, and live SIHH 2019 coverage here and on social media.

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