Haute horlogerie is (usually) a very restrained and serious business; however one of Maximilian Büsser main goals in creating MB&F was to bring a child's sense of awe and sense of playfulness into high-end watchmaking. There is no doubting that with the HM3 Frog, MB&F have certainly achieved that aim . . . and more!
The protruding eyes of the (amphibian) frog enable it to see in many directions without having to turn its head. The bulbous domes of the HM3 Frog have the opposite, but no less important, feature of enabling the time to be easily seen from many angles without having to turn the wrist. The Frog differs substantially from HM3 in that it is the aluminum domes that rotate under the sapphire crystals in the Frog, whereas it is the hour and minute hands that rotate around their respective stationary cones on HM3.
Rotating domes of this size and shape posed MB&F with a number of technical challenges. The hour and minute domes are machined from solid aluminium - chosen for its optimal strength to weight ratio. The domes weigh in at just over 0.5g. They are milled first from the outside and then the inside to arrive at a paper-thin wall thickness of just 0.28 mm, which reduces their energy requirements to an absolute minimum.
Even the fabrication of the semi-spherical sapphire crystal domes was incredibly demanding and only recently even possible at all. This is due to the fact that any slight imperfection in the sapphire might introduce a disconcerting magnification effect. The sapphire has to be shaped and polished to be perfectly uniform.
The Frog's unusual method of indicating time necessitated the development of a new gear train for the HM3 engine. This was because the aluminum hour dome of the Frog rotates in 12 hours compared to the 24 hour revolution of the HM3 hour hand. And as the oversized date wheel is driven from the hours, the gearing driving the date had to be reworked as well.
The Frog may portray the time in a playful manner, but there is nothing but serious and meticulous attention to detail and care regarding the fine hand-finishing of the high-tuned engine purring within its lightweight high-tech titanium case. A close inspection of the case is rewarded with carefully thought out detailing including a figure 8 engraved around the domes that mirrors the form of the display back(revealing dual ceramic bearings); distinctive clover-head white gold screws; and an engraved arrow discreetly indicating the easy to read over-sized date.
If the viewer's gaze manages to break away from the obiculate indications, it is likely to be arrested by the brightly-coloured 22K gold battle-axe winding rotor or the intricacies of the thoroughbred movement beneath.
The HM3 Frog is available in Grade 5 titanium with blued rotor or a limited edition of 12 featuring mark-resistant black-coated titanium with green rotor.
HM3 Frog – Technical Specifications
Horological Machine No3 Frog
Movement:
Three-dimensional horological engine designed by Jean-Marc Wiederrecht/Agenhor;
Girard-Perregaux oscillator and gear
Balance oscillating at 28,800 bph.
22K blued rose gold battle-axe shaped ‘mystery' automatic winding rotor
Hour and minutes information transmitted via ceramic ball bearings to rotating domes.
Number of jewels: 36 (all functional)
Number of components: 304
Functions:
Hour and day/night indicator on one dome (aluminium dome rotating in 12 hours)
Minutes on second dome (aluminium dome rotating in 60 minutes)
Date around the movement
Case:
Grade 5 titanium/blue 22K gold rotor; limited edition of 12 black titanium/green 22K gold (black treated with mark-resistant silicon oxide)
Screwed-down crown
Dimensions (exclusive of crown and lugs): 47mm x 50mm x 16mm
Number of case components: 53
Sapphire crystals:
Domes and both display backs with anti-reflective treatment on both faces.
Domes for indications: in aluminium, 0.58g
Dials:
Rotating aluminium domes, stationary hands
Strap & Buckle:
Black hand-stitched alligator with 18K white gold & titanium custom designed deployment buckle
'Friends' responsible for Horological Machine No3 Frog
Concept: Maximilian Büsser
Product Design: Eric Giroud – Eric Giroud Design Studio
Technical and Production Management: Serge Kriknoff/MB&F
Production logistics: David Lamy/MB&F
Movement Development: Jean-Marc Wiederrecht and Nicolas Stalder of Agenhor
Movement fabrication: Georges Auer/Mecawatch, Salvatore Ferrarotto/APR Quality
Hand-finishing of movement components: Jacques-Adrien Rochat and Denis Garcia of C-L Rochat
Ceramic ball bearings: Patrice Parietti/MPS
Movement assemblage: Didier Dumas and Georges Veisy/MB&F
Case and buckle construction and production: Dominique Mainier and Bertrand Jeunet of G&F.Châtelain
Sapphire domes: Martin Stettler/Stettler Sapphire
Sapphire plates: Denise Boileau/Montavon
Dials: François Bernhard and Denis Parel of Nateber
Strap: Olivier Purnot/Camille Fournet
Presentation case: Frédéric Legendre/Lekoni and Isabelle Vaudaux/Vaudaux
Communication:
Graphic Design - Gérald Moulière and Alban Thomas of GVA Studio
Product Photography - Maarten van der Ende
Display Architecture - Frédéric Legendre/Lekoni
Portrait Photography - Régis Golay/Federal
Webmaster - Stéphane Balet and Guillaume Schmitz of Sumo Interactive
Texts - Ian Skellern
Project Manager - Estelle Tonelli/MB&F
MB&F - The Genesis of a Concept Laboratory
The projects that gave Maximilian Büsser the most pleasure and personal satisfaction during his seven year tenure as head of Harry Winston Timepieces, were those working with talented independent watchmakers on the exciting Opus series watches. An idea for his own personal utopia emerged; that of creating a company dedicated solely to designing and crafting small series of radical concept watches in collaboration with talented professionals he both respected and enjoyed working with. The entrepreneur in Büsser brought the idea to reality.
MB&F is not a watch brand, it is an artistic and micro-engineering concept laboratory in which collectives of independent horological professionals are assembled each year to design and craft radical Horological Machines. Respecting tradition without being shackled by it enables MB&F to act as a catalyst in fusing traditional high-quality watchmaking with cutting-edge technology and avant-garde three-dimensional sculpture.
MB&F is independent people creating for independent people.
