2012/08/13 - MB&F the News HM3 Frog Ti & HM3 Poison Dart Frog
MB&F presents Horological Machine No3 Frog. Haute horlogerie is (usually) a very restrained and serious business; however one of Maximilian Büsser’s main goals in creating MB&F was to bring a child's sense of awe and playfulness into high-end watchmaking. There is no doubting that with the HM3 Frog series MB&F have certainly achieved that aim… and more!
The protruding eyes of real-life, amphibious frogs enable them to see in many directions without having to turn their head. The bulbous hour and minute domes of HM3 Frog create a similar effect, though in this case it means the wearer can easily read the time from a variety of angles without having to turn his or her wrist.
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 a micro-light 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 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 highly-tuned, Jean-Marc Wiederrecht-designed engine. 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 screws; and an engraved arrow discreetly indicating the easy to read over-sized date.
HM3 Frog Ti is available in Grade 5 titanium with blue 22k gold battle-axe winding rotor.
HM3 Poison Dart Frog is a limited edition of 10 pieces available exclusively at The Hour Glass and features black PVD-coated zirconium case, 22k gold rotor and 18k yellow gold screws.
Technical Specifications
Movement :
- Three-dimensional horological engine designed by Jean-Marc Wiederrecht/Agenhor;
- Powered by a Sowind base
- Balance oscillating at 28,800 bph.
- Battle-axe shaped ‘mystery’ automatic winding rotor.
- HM3 Frog Ti: Rotor in blue PVD 22k gold
- HM3 Poison Dart Frog: Rotor in 22k gold
- Hour and minutes information transmitted via ceramic ball bearings to rotating domes.
- Number of jewels: 36 (all functional)
- Number of components: 304
Functions :
- Hour on one dome (aluminium dome rotating in 12 hours)
- Minutes on second dome (aluminium dome rotating in 60 minutes)
- Date around the movement
Case :
- HM3 Frog Ti: Grade 5 titanium case and screws
- HM3 Poison Dart Frog: Black PVD zirconium case, 18k yellow gold screws, limited edition of 10 pieces
- Screwed-down crown
- Dimensions (exclusive of crown and lugs): 47mm x 50mm x 18mm
- Number of case components: 53
Sapphire crystals :
- Domes and both display backs with anti-reflective treatment on both faces.
Dials :
- Rotating aluminium domes – 0.58g
Strap & Buckle :
- Black hand-stitched alligator with 18K gold & titanium custom designed deployment buckle
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