horological machine n°4 Thunderbolt

horlogical machine n°4 Thunderbolt

 
 

About

A traditional wristwatch has a relatively straightforward role: to tell the time. All that is needed is a hand for the hours, another for the minutes and perhaps a power reserve indicator to keep track of running time. Horological Machine No4 Thunderbolt has a hand for the hours, another for the minutes and a power reserve indicator. HM4 Thunderbolt tells the time.

HM4 Thunderbolt is not a traditional wristwatch.

The aviation-inspired case and engine of the Thunderbolt are one. Neither would, nor could, exist without the other, yet each is so transcendental as to be able to stand alone as a work of art in its own right. The case of HM4 blends high-tech titanium for its lightweight and strength with a sapphire centre section offering a view into the engine. The limited editions HM4 Razzle Dazzle and Double Trouble take the aviation theme even further with real rivets in their fuselages and hand painted nose art inspired by the rebellious paintings on WWII aircraft, while HM4 RT offers an altogether more luxurious way to fly.

The Thunderbolt's engine is the culmination of three long years of development. Each of the 300-plus components – including the regulator and even the screws – was developed specifically for this anarchistic calibre. Horizontally configured dual mainspring barrels drive two vertical gear trains, transferring power to the twin pods indicating hours/minutes and power reserve.

The sleek aerodynamic form of the Thunderbolt's envelope has its roots in Maximilian Büsser's childhood passion for assembling model plane kits, though none looked remotely as futuristic as these. The striking transparent sapphire section of the case requires over 185 hours of machining and polishing to transform an opaque solid block of crystal into a complex, exquisitely curved panel allowing the light to come in and the beauty of Thunderbolt's engine to stand out. Every component and form has a technical purpose; nothing is superfluous and every line and curve is in poetic harmony. Articulated lugs ensure supreme comfort. Highly legible time is a fringe benefit.

HM4 is available in titanium/sapphire; HM4 Razzle Dazzle and Double Trouble are limited editions of 8 pieces each in titanium/sapphire with hand painted nose art; HM4 RT is a limited edition of 18 pieces in 5N red gold, titanium and sapphire and the HM4 Final Edition closes the HM4 series in 2013 with a limited edition of 8 pieces in blackened titanium and sapphire.

views

  • all
  • hm4 Final Edition
  • hm4 thunderbolt
  • hm4 razzle dazzle / double trouble
  • hm4 thunderbolt rt
HM4 RD REAR
HM4 Final Edition Rear
HM4 BACK
HM4 Final Edition Face
HM4 DT BACK
HM4 DT PROFILE
HM4 Final Edition Front
HM4 TOP
HM4 FACE 2
HM4 RT FRONT
HM4
HM4 RD FRONT
HM4 RT BACK
HM4 PROFILE DUO
HM4 RD PROFILE
HM4 PROFILE
HM4 FACE 1
HM4 RT TOP

friends

  • all
  • design
  • movement
  • case & buckle
  • dial & hands
  • communication
  • accessories
 
 
CYRIL FALLET
 
Hervé Estienne
 
Bertrand Sagorin-Querol
 
Alexandre Bonnet
 
Yann Ryser
 
Charris Yadigaroglou
 
Georges Veisy
 
Jacques-Adrien Rochat
 
Gérald Moulière
 
Isabelle Chillier
 
Bertrand Jeunet
 
Maximilian Büsser
 
Eric Giroud
 
Denis Parel
 
Stéphane Balet
 
Maarten van der Ende
 
Didier Dumas
 
Félix Celetta
 
Jean-Pierre Kohler
 
Nicolas Broquet
 
Isabelle Villa
 
Guillaume Thévenin
 
Patricia Duvillard
 
FLORIAN COURBAT
 
Aurora Amaral Moreira
 
Frédéric Saulcy
 
Virginie Meylan
 
Daniel Uhlmann
 
Béranger Reynard
 
Martin Stettler
 
Denis Garcia
 
Ian Skellern
 
Pierre Chillier
 
Dominique Mainier
 
Serge Kriknoff
 
Laurent Besse
 
François Bernhard
 
Régis Golay
 
Guillaume Schmitz
 
David Lamy
 
Patrice Parietti
 
Lionel Gavignet
 
Olivier Berthon
 
Tomas Fransson
 
Eléonor Picciotto
 
Alexandre David
 

engine

  • front
  • back

collection

42btslb.png

42.BTSL.B
HM4 Final Edition
Blackened titanium and sapphire
Limited Edition of 8 pieces

40rslr.png

40.RSL.R
HM4 Thunderbolt RT
Red Gold & Titanium
Limited edition of 18 pieces

40tslb.png

40.TSL.B
HM4 Thunderbolt
Sapphire & Titanium

41tslbdt.png

41.TSL.BDT
Double Trouble
Sapphire & Titanium
Limited edition of 8 pieces

41tslbrd.png

41.TSL.BRD
Razzle Dazzle
Sapphire & Titanium
Limited edition of 8 pieces

specs & manual

  • view specs
  • view manual

Case

  • HM4 Thunderbolt: Grade 5 Titanium and sapphire
  • HM4 Razzle Dazzle and Double Trouble: Grade 5 Titanium and sapphire, hand painted nose art, limited editions of 8 pieces each
  • HM4 Thunderbolt RT: 5N red gold, Grade 5 titanium and sapphire. Limited edition of 18 pieces
  • HM4 Final Edition: Blackened titanium and sapphire. Limited edition of 8 pieces closing the HM4 series in 2013
  • Dimensions: 54mm wide x 52mm long x 24mm high
  • Number of components: 65 (67 for HM4 Final Edition)
  • Articulation of lugs: 3°

Engine

  • Three-dimensional horological engine developed 100% by MB&F
  • Manual winding with two mainspring barrels in parallel
  • Power reserve: 72 hours
  • Balance frequency: 21,600bph/3Hz
  • Number of components: 311
  • Number of jewels: 50

Functions

  • Hours, minutes and power reserve indicator
  • Hours and minutes on right dial, power reserve indicator on left dial
  • Separate crowns for time setting and winding

Sapphire crystals

  • Five sapphire crystals: 2 x dials, 1 x central case section, 2 x display panels (top and bottom)

Strap & Buckle

  • Hand-stitched calfskin strap with titanium/white gold or red gold custom designed folding buckle attached to articulated lugs.
  • Razzle Dazzle and Double Trouble: Authentic vintage leather strap crafted from Swiss military bags with contrasting white hand stitching. Titanium/white gold custom designed deployment buckle.

Accessories

accessories
manual_1

functions

  1. Hour
  2. Minute
  3. Second
manual_2

Winding

Your watch is equipped with a manual winding movement.
If it has stopped, wind the crown (1.) till the maximum power reservecapacity (2.)
Warning : do not try to slide the crown out !

time setting

3. “In” position: normal position when wearing the watch.
4. “Out” position: turn the crown anticlockwise and slide it fully out. Turn the crown to correct the time.