MB & F HM4 Thunderbolt RT
MB & F HM4 Thunderbolt RT

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Year
2012
Type
Watch
Price range CHF
>150000
Category
Exceptional Mechanics
Case
Titanium
Water-resistant
<30m
Bracelet/strap
Leather
Functions/Complications
- Power reserve

HM4 Thunderbolt RT

Introducing Horological Machine N°4 in an envelope of red gold, titanium and sapphire. Beneath the aerodynamic shell are two barrels, connected in parallel and which transfer power to the two identical, turbine-shaped indication pods. In the central cockpit, the streamlined cock has been cut away in its middle to reveal as much of the oscillating wheel as possible, and the sophisticated finish of these micromechanics. This three-dimensional aesthetic was conceived specifically to house the engine, whose 311 components are all tailor-made.
Movement
Three-dimensional, hand-wound with two parallel barrels, 50 jewels, 21,600 vib/h, 72-hour power reserve
Functions
Hours, minutes and power reserve
Case
Grade 5 titanium, 18K red gold and sapphire, 54 x 52 x 24 mm 3 parts: two pods and a central section 5 sapphire crystals: 2 x dials, 1 x central section, 2 x top and bottom display panels 2 separate crowns to set the time and wind the movement
Dial
Right dial: hours and minutes, hands coated with Superluminova Left dial: power-reserve indicator with openworked hand in the form of a double-edged axe
Bracelet/strap
Hand-stitched brown calfskin with titanium and 18K red gold folding clasp