BIANCHET Carbon Orange Tourbillon B1.618 Openwork Limited Edition

BIANCHET welcomes a new Carbon Orange version to the Tourbillon B1.618 Openwork, an exclusive Swiss made luxury watch collection inspired by the Golden Ratio.

The BIANCHET Tourbillon B1.618 Openwork watch was introduced in 2020. The architecture of its movement, the design of the case and all the proportions have been thought out and designed according to the principles defined by the Golden Ratio 1.618.

During the Geneva Watch Days 2022, the brand revealed the Tourbillon B1.618 Openwork Carbon Orange watch.

The Titanium-Dust-Infused Carbon used for the case is a new composite consisting of carbon fibre inter-layered with titanium powder to make it more luminous, more precious, with unexpected moiré reflections. The orange colour details capture the connection with life, earth and movement.

Mathematically proportioned according to the Golden Ratio principle, the arcs of the tonneau-shaped case are accented by two fine bands of rubber in orange color.

A Bianchet signature feature, these colour inserts fulfil a design and engineering purpose whilst defining the chromatic theme that extends through the hands and hour markers, the tone-on-tone rubber insert of the crown and the strap.

The watch has been designed to be shock resistant up to 6,000Gs –as well as water resistant to 5 ATM (about 50 metres). The watch offers an exceptional 105-hour power reserve.

The sapphire crystal on the dial side and on the case back provides an unobstructed view of the Bianchet titanium tourbillon calibre B1.618. The plate, wheel bridges and tourbillon cage of the movement are all made of titanium.

The titanium calibre is adjusted to 6 positions, ensuring a running precision of -4 to +4 seconds per day. The lubricating oils are enhanced with nanodiamonds to reduce friction to an absolute minimum.

The movement boasts several variations of hand-finishing on the plate and bridges. Each one is distinctive, and underlines the complexity of the calibre’s architecture and its spectacular arcs. Each surface is given its own finish.

Polishing, satin-finishing, bead-blasting and circular graining all serve the interplay of light and textures, whilst the black DLC coating contrasts beautifully with the reflections of the rhodium-plated cogwheels.

This new model comes with a soft natural rubber strap in orange and in black. Shorter lugs enhance both the case’s compact aesthetics and its feel on the wrist.

Technical details

Model: BIANCHET Tourbillon B1.618 Openwork Carbon Orange

Materials: Titanium-Dust-Infused Carbon and natural vulcanised rubber
Crown: Grade 5 Titanium
Crystal: Sapphire crystal with antireflective coating, case front and case back
Dimensions: 43 x 50 x 13mm
Shock resistance: 6000 G
Water resistance: 50 meters (5 ATM)

Calibre B1.618
Materials: Main plate, bridges and tourbillon cage in Grade 5 titanium
Tourbillon: 60-seconds, hand-wound, 6 positions
Antimagnetic tourbillon cage
Variable inertia balance wheel
Frequency: 3 Hz – 21,600 vph
Precision: -4+4 sec/day
Lubricants enriched with diamond nano particles to reduce friction
Finishes: Sand-blasted, circular-grained, satin-brushed titanium plates and bridges with a black DLC coating, hand-finished titanium tourbillon cage

Materials: Natural vulcanised rubber, Grade 5 Titanium folding clasp
Available in orange and black


5 years

Limited Series of 21 pieces

Suggested retail price
CHF 55,000 CHF / EUR 55’000 (excluding taxes)