Horological Machine N°2


First launched in 2008, Horological Machine No.2 revolutionized the world of haute horlogerie with its distinctive rectangular shape, flying buttresses, dual portholes and modular construction. Its mechanical movement offers instantaneous jumping hours, concentric retrograde minutes, retrograde date, bi-hemisphere moon-phase and automatic winding.

The dynamic tension between apparently incongruous elements in Horological Machine No.2, such as that between innovative technology and sculptural art, matte finish and mirror polish, modern alloys and precious metals, and between traditional watchmaking and 21st century micro-engineering, endows this machine with vibrant vitality. The sapphire crystal cases of the HM2-SV editions offer visual access into the meticulously hand-finished engine.

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the machine


  • Materials: 18k white gold/titanium and red gold/titanium editions, ceramic/red gold and ceramic/titanium editions, sapphire/black PVD titanium and sapphire/18k red gold editions.
  • Dimensions: 59 x 38 x 13 mm


  • Three-dimensional horological engine designed by Jean-Marc Wiederrecht/Agenhor.
  • Powered by a Sowind base
  • 22k gold ‘battle-axe’ automatic winding rotor
  • 349 components / 44 jewels

Functions / indications

  • Left dial: retrograde date and bi-hemisphere moon phase.
  • Right dial: jumping hours and concentric retrograde minutes.
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Jump hour/retrograde mechanism

Jump hour/retrograde mechanism

The highly energy-efficient jump hour/retrograde mechanism uses exclusive (and patented) asymmetrical-tooth gear wheels to ensure high precision and play-free functionality.

Bi-hemisphere moon-phase

Bi-hemisphere moon-phase

Two beautiful white gold moon faces for the two hemispheres are displayed on the left dial.

Complex case

Complex case

With bevels, flying buttresses, mounting holes, porthole cut-outs and embedded gasket tracks, the HM2 case is complex enough… The sapphire crystal of the ‘SV’ editions pushed the limits further, requiring 55 hours of milling, drilling and polishing to create a single case.



Designed like the space platforms of 20th century science fiction novels, the HM2 case features flying buttresses, bolted portholes and a sliding crown guard. It was so complex - over 100 components go into the case alone - that it could only be developed with an innovative modular method, inspired by the meccano sets of Maximilian Büsser's childhood. In line with best engineering principles, this modularity also simplifies future refurbishment of the case should it ever be necessary.

In true MB&F style, Jean-Marc Wiederrecht and Maximilien Di Blasi worked hand in hand with erstwhile competitor Patrick Lété in ensuring that the architecture of the movement fitted coherently and holistically with the iconoclastic case.


The HM2 series was crafted in limited editions combining 18k red or white gold, grade 5 titanium, ceramic and sapphire crystal cases.