Published on May 4th, 2017 | by Daniel Sherman Fernandez


ARMIN STROM Mirrored Force Resonance in Stainless Steel

Looking for an even more complicated time face, the limited edition Mirrored Force Resonance has now been augmented by a stainless steel variant with a dark blue alligator strap dedicated to the element of water. The white dial endows this exceptional timepiece with an elegant retro character and sets the stage for the resonance mechanism with striking contrasts.

Two oscillating bodies in close proximity influence each other and eventually synchronize; this is a phenomenon of physics known as resonance. Towards the end of the year 2016, Armin Strom introduced the Mirrored Force Resonance, a resonating dual regulator developed for maximum precision with its whole captivating mechanism on full display dial side.

Resonance is a sophisticated and demanding horological technique that has rarely been attempted, let alone mastered in the pursuit of horological accuracy, precision, and rate stability. Christiaan Huygens (1629-1695), inventor of the pendulum clock, was the first to discover the resonance of two separate pendulum clocks, while in the eighteenth century Abraham-Louis Breguet demonstrated his mastery of the phenomenon.

Since then, only a handful of watchmakers have attempted to harness the effects of resonance, whose advantages of resonance are threefold:

  1. A stabilizing effect on timekeeping (advantageous to accuracy).
  2. A conservation of energy (think of a professional cyclist riding in the shadow of anothercyclist in a racing situation).
  3. A reduction of negative effects on timekeeping accuracy due to outside perturbation such as shock to the balance staff, which in turn keeps the rate more stable and increases precision.

The two visible, connected oscillators make their revolutions in opposite directions, one rotating clockwise and the other counter clockwise. After winding, the twin balance wheels need approximately 10 minutes to become synchronous. The case band pusher at 2 o’clock resets the luminous twin seconds’ displays to zero, simultaneously resetting the twin balance wheels. The Mirrored Force Resonance is the most complicated timepiece that Armin Strom manufactures and a patent has been registered.

The raison d’être of the Mirrored Force Resonance is to display the interesting functionality of the resonant balances while improving the watch’s overall precision. The resonance clutch spring provides the watch with a fascinating and patented “animation” of the way it functions. This remains in line with the philosophy of ARMIN STROM as a brand: no nonsense, just good, proprietary mechanics presented in an impeccably finished and interesting way. The resonance clutch spring is exciting in another way, too: it visually proves this timepiece’s resonance.


Movement Manufacture


16½‘‘‘, Manual-winding, resonance clutch spring, twin display of seconds, off-centre time indications

Impulse: Two independent, symmetrically mirrored regulators

Plate and bridges: Plate and bridges are decorated at the highest quality level

Regulating system: Two independent regulation systems that stabilize each other connected by a resonance clutch spring

Frequency: 25,200 vph

Number of jewels: 43

Number of individual parts: 226

Diameter: 36.60mm

Height: 7.70mm

Power reserve: 48 hours



Hours, minutes, twin display of seconds



Stainless steel

Sapphire crystal and case back with antireflective treatment

Diameter: 43.40mm

Height: 13.00mm

Water resistance: 50m



Dial ring: White with founded appliqués

Hands: Stainless steel



Delivered with a genuine blue alligator horn-back strap and stainless steel ardillon buckle as well as an additional blue rubber strap

A double-folding clasp in stainless steel is available as an option



Limited to 50 pieces

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