Breguet has accentuated the suspended effect of its first flying tourbillon, by adding the mysterious complication. The mysterious complication consists of imparting a movement to an organ without it being visibly linked to the rest of the movement. It is often used for watch and clock hands, but any rotating organ can be involved, including the tourbillon, as seen on the Classique Tourbillon Sidéral 7255. The Classique 7255 thus incorporates both a mysterious and a flying tourbillon. This results from the combination of a regulator with an invisible drive that extends above the movement. Altogether, it creates a levitation effect and enhances visibility of the mechanism.

The mysterious tourbillon is a striking complication which has been mastered by Breguet watchmakers. The lower bridge and the lower support of the tourbillon carriage, are, for this model, made of sapphire glass with an anti-reflective coating, rendering them invisible. The point of contact between the gears and the carriage is not visible; it is offset from the tourbillon cutout and therefore hidden from view by the dial.

Case

Case Material: 18K Breguet gold
Shape: Round
Width: 38 mm
Thickness: 10.2 mm
Caseback: Sapphire case back
Width of lugs: 20 mm
Type of crown: Non-screwed crown

Strap

Material:Alligator
Type of buckle: Three-blade deployant clasp
Material of buckle: 18K Breguet gold

Dial

Dial finish: Polished
Dial coating: Grand Feu enamel aventurine
Hand material: 18K Breguet gold
Hand type: Breguet hollow apple

Movement 187M1

Power reserve: 50 hours
Width: 30 mm
Thickness: 4.8 mm
Number of jewels: 23
Frequency: 2.50 Hz
Winding: Manual winding
Number of components: 183
Balance spring: Breguet Nivachron™
Balance wheel: A vis