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MB&F present the HM4 RT

Maximilian Büsser & Friends has officially unveiled his latest masterwork, the stunning MB&F HM4 RT special edition.

“With its satin-sheen red gold case, HM4 RT transforms the Thunderbolt into a Jules Verne flying machine. The sleek aerodynamic case blends majestic red gold with transparent sapphire crystals offering a stunning view into HM4 RT’s specifically-developed, in-house engine, the complex micro-mechanics of which are the result of three long years of development.The striking, transparent sapphire section of the case requires over 100 hours of machining and polishing to transform an opaque solid block of crystal into a complex, exquisitely curved panel allowing light to come in and illuminate the beauty of HM4 RT’s engine.”

Limited edition of 18 pieces in 5N red gold, titanium and sapphire. Technical specifications after the break.

Technical specifications

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

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

Red gold, grade 5 Titanium and sapphire crystal
Dimensions: 54mm wide x 52mm long x 24mm high
Number of components: 65
Articulation of lugs: 3°

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

Strap & Buckle:
Brown hand-stitched calfskin strap with red gold custom designed tang buckle attached to articulated titanium lugs

[ Source: MB&F ]

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