horological machine n°5

horlogical machine n°5



MB&F celebrates its 10th anniversary in 2015, and there is one basic fact about birthdays that is fairly safe to assume: The one celebrating usually gets the presents.

However, for the most significant anniversary of its decade-long existence, MB&F turns that one basic assumption on its head. Rather than expecting to receive, the creative lab has conceived HMX – “X” as in the Roman numeral for ten – as a thank you to the Friends who have supported the brand over the last 10 years. Instead of developing an ultra-complicated, ultra-expensive anniversary piece – standard practice in the luxury watchmaking world – MB&F has cut sales margins without sacrificing quality, offering a true Horological Machine at an unprecedented price.

Paradoxically, creating such a Machine also made HMX one of the most difficult to develop as MB&F considered, tested and rejected a plethora of combinations of forms, finishes and details before being satisfied that everything was "just right”.

A creative adult is a child who survived

The tag line for MB&F's 10th anniversary is “A creative adult is a child who survived”, a reference to a child's sense of wonder and awe that usually fades under the onslaught of the everyday realities of reaching adulthood.

As a child, MB&F founder Maximilian Büsser dreamt of becoming a car designer and his sketchbooks were full of drawings of the supercars of his imagination. The automobile-inspired HMX is proof positive that the child in Büsser survived.

HMX displays bi-directional jumping hours and trailing minutes. Apparently simple, but it is how and where the time is displayed that makes HMX so special. Rotating discs on top of the movement feature mirror image numerals. These are reflected 90° and magnified by two sapphire crystal optical prisms that "project" the time onto the front vertical display. Light streaming through the transparent engine cover both illuminates the top of HMX's engine and backlights the time display for high legibility.

Also visible through the sapphire crystal engine cover are supercar-inspired dual "rocker covers" on top of the movement, each featuring shiny chrome oil filler caps. These oil caps are not just pretty design elements, but are fully functional oil caps that the watchmaker unscrews to oil the jewelled bearings for the indication discs.

An automatic winding mechanical movement provides HMX with power, its "fuel" topped up by the 22K gold rotor visible through the display back.

HMX is a limited edition of 4 x 20 pieces in grade 5 titanium and stainless steel, available in black, green, red and blue.


HMX Face Red
HMX Front Red
HMX Collection
HMX Rear Red
HMX Front Blue
HMX Back
HMX Front Black
HMX Face Blue
HMX Front Green


  • all
  • design
  • movement
  • case & buckle
  • dial & hands
  • communication
  • accessories
Luis André
Andreas Deubzer
Adrien Schutz
Dominique Mainier
Denis Villars
Jean-Pierre Cassard
Régis Golay
Hervé Estienne
Cyril Fallet
Guillaume Thévenin
Didier Dumas
Maximilian Büsser
Eric Giroud
Georges Veisy
Alain Lemarchand
Isabel Ortega
Ian Skellern
Jacques-Adrien Rochat
Olivier Berthon
Dominique Guye
Riccardo Pescante
Jean-Michel Pellaton
Damien Seydoux
Florian Courbat
Aurora Amaral Moreira
Gilles Bondallaz
Fabien Chapatte
Maarten van der Ende
Alain Pellet
Denis Garcia
Juliette Duru
Emmanuel Maitre
Patricia Duvillard
David Lamy
Serge Kriknoff
Charris Yadigaroglou
Virginie Meylan
Anne Guiter
Ruben Martinez
Stéphane Balet
Victor Rodriguez
Yves Bandi
Bertrand Jeunet
Marc André Deschoux
Martin Stettler


  • front
  • back



HMX Black
Titanium and stainless steel with black details
Limited Edition of 20 pieces


HMX Green
Titanium and stainless steel with green details
Limited Edition of 20 pieces


Titanium and stainless steel with red details
Limited Edition of 20 pieces


HMX Blue
Titanium and stainless steel with blue details
Limited Edition of 20 pieces

specs & manual

  • view specs
  • view manual

Limited edition of 4 x 20 pieces in grade 5 titanium and stainless steel


  • Grade 5 titanium and stainless steel with detailing in black, green, blue or red.
  • Dimensions: 46.8 x 44.3 x 20.7 mm
  • Number of components: 44
  • Water resistance: 30m / 90’ / 3atm


  • Three-dimensional horological engine, composed of a jumping hour and trailing minutes module developed in-house by MB&F, powered by a Sellita gear train.
  • Mechanical movement, automatic winding
  • 22K gold automatic winding rotor
  • Power reserve: 42 hours
  • Balance frequency: 28,800bph/4Hz.
  • Number of components: 223
  • Number of jewels: 29

Functions / indications

  • Bi-directional jumping hours and trailing minutes, displayed by dual reflective sapphire crystal prisms with integrated magnifying lens.

Sapphire crystals:

  • Sapphire crystals on top, front and display back treated with anti-reflective coating on both faces.
  • Dual reflective sapphire crystal prisms with integrated magnifying lens.

Strap & Buckle

  • Partially perforated calfskin strap with colour complementary to Engine, titanium tang buckle.

Click here to download the manual in pdf format.