Bell & Ross BR-X2 Skeleton Tourbillon Micro-Rotor

After the second generation of “Experimental” collection, the BR X2 model launched in 2017, Swiss watch brand Bell & Ross is presenting the BR-X2 Skeleton Tourbillon Micro-Rotor this year.

This pared down model perfectly illustrates Bell & Ross’ idea of contemporary Haute Horlogerie, with the movement showcased as a masterpiece within an ultra-modern setting. The concept behind the BR X2 is that the movement is worn directly on the wrist. The mechanism is brought to the forefront, while the case disappears.

Bell & Ross BR-X2 Skeleton Tourbillon Micro-Rotor

Bell & Ross designed and developed an exceptional square movement, the manufacture calibre BR-CAL.381, which adopts the brand’s iconic signature shape. It is set between two sapphire crystal plates, linked by a narrow band of steel machined as a single piece, to ensure unrestricted visibility.

This makes the case virtually invisible, and the dial does the same to showcase the skeleton movement, allowing all elements of the mechanism to be admired. For a skeleton movement, the challenge is to remove as much material as possible whilst ensuring the model’s mechanical constraints are respected. From the micro-components to the finished watch, every detail is important.

Bell & Ross BR-X2 Skeleton Tourbillon Micro-Rotor

This two-hand watch displays the hours and minutes with optimal precision thanks to a flying tourbillon that compensates for the gravitational pull of the earth. Simplicity, yes; but also elegance and restraint, thanks to its understated dimensions (42.5 mm square) and delicacy, made possible by the extra-thin movement — just 4.05 mm — with automatic winding provided by a microrotor.

This miniaturisation process allowed the thickness of the movement to be reduced, yet with an equivalent power reserve. Inspired by modern architecture, this model will be available in a limited edition of 50 pieces.

Technical details

Model: Bell and Ross BR-X2 Skeleton Tourbillon Micro-Rotor
Reference: BRX2-MRTB-SK-ST

Caliber BR-CAL.381
Automatic mechanical
Micro-rotor tourbillon
The micro-rotor is machined in a very dense alloy, Reconit 18. This alloy contains 95% tungsten. 18.5 density, compared to steel (8.0), pure gold (19.3), 18-ct gold (15.5-16.5 according to colour), platinum (20.7)

Hours and minutes
Flying tourbillon at 6 o’clock

42.5 mm in diameter
Satin-polished steel
Crystal: sapphire with anti-reflective coating
Water-resistance: 50 metres

Metal applique Superluminova®-filled indices
Metal skeletonized Superluminova®-filled hour and minute hands

Grey alligator
Folding buckle in satin-polished steel

Limited Edition to 50 pieces

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