Bianchet pairs high-tech black ceramic with an 18K rose-gold Golden Line on the Tonneau UltraFino, housing the UT01 flying tourbillon. Priced at CHF 80,500.
Why It Matters
- Precisely 3.85 mm of titanium separates the Tonneau UltraFino Black Ceramic from a solid case: the UT01 calibre’s ultra-thin flying tourbillon architecture, assembled in La Chaux-de-Fonds, is the mechanical argument that justifies 40 mm of high-tech ceramic at CHF 80,500.
- For the first time, Bianchet executes its signature Golden Line seam in 18K rose gold rather than rubber, turning a structural case component into a precious accent.
- The UT01 automatic flying tourbillon delivers a 60-hour power reserve and is rated to 5,000 G shock resistance.
- Delivered with both an integrated ceramic bracelet and a quick-release black rubber strap, the watch shifts character without tools.
On 13 October 2026, at the premier Haute Horlogerie exhibition in Latin America, SIAR Mexico, Bianchet placed the Tonneau UltraFino Black Ceramic before collectors for the first time. The case and integrated bracelet are black high-tech ceramic throughout, with alternating satin-brushed surfaces and polished bevels that shift the depth of the material under changing light.
The Golden Line
Bianchet’s Golden Line is a structural component positioned beneath the bezel, not a layer of paint or an applied trim. On earlier Tonneau UltraFino references, this seam was executed in rubber, one of the Maison’s recognised design signatures. Here, for the first time, it is crafted from 18K rose gold and assembled into the case, tracing the curves and facets of the tonneau form. Its warm reflection appears and recedes with wrist movement, introducing a material tension between high-tech ceramic and precious gold that runs from the exterior into the rose-gold rotor visible through the openworked movement.
Movement & Materials
The UT01 automatic flying tourbillon measures 3.85 mm in total thickness. Its 2.66 mm non-magnetic titanium tourbillon cage sits at 6 o’clock; the suspended barrel occupies 12 o’clock. Rear bridges, finished by hand with more than 30 hours devoted to bevelling alone, are arranged around concentric Golden Circles that also absorb rotor inertia during severe impacts. The 18K rose-gold rotor is shaped around Fibonacci geometry, a recurring formal reference at Bianchet.
Who It Is For
At 40 mm wide and 8.9 mm thick, the Tonneau UltraFino Black Ceramic sits close to the wrist and wears lighter than its proportions suggest, as ceramic always does. The profile suits collectors who want a flying tourbillon that reads as contemporary, not ceremonial. The quick-release system makes the shift between the ceramic bracelet and the black rubber strap immediate, broadening the range of occasions without any change to the watch’s fundamental character.
Verdict
Bianchet’s decision to execute the Golden Line in 18K rose gold changes the visual weight of the Tonneau UltraFino without altering its architecture. The contrast is precise and purposeful: black ceramic and rose gold occupy the same case, but they do different things to the light. For collectors in the Gulf and across Europe seeking an independent flying tourbillon with a coherent material argument, the Tonneau UltraFino Black Ceramic at CHF 80,500 presents a clear, specific proposition.
| Movement | Bianchet UT01, automatic flying tourbillon, Grade 5 titanium / black PVD, 3.85 mm thick, 60-hour power reserve, 5,000 G shock resistance |
| Case size | 40 mm (W) × 47.5 mm (L) × 8.9 mm (H) |
| Case material | High-tech black ceramic with 18K rose-gold Golden Line seam |
| Dial | Openworked; flying tourbillon at 6 o’clock, suspended barrel at 12 o’clock; rose-gold hands |
| Strap | Integrated high-tech ceramic bracelet (satin-brushed and polished); additional black rubber strap with quick-release system |
| Water resistance | 5 ATM |
| Price | CHF 80,500 (excl. taxes) |
| Availability | On request from the maison or an authorised retailer in the Middle East |
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Frequently Asked Questions
What movement does the Bianchet Tonneau UltraFino Black Ceramic use?
The watch houses the Bianchet UT01, an in-house automatic flying tourbillon calibre developed and assembled in La Chaux-de-Fonds. At 3.85 mm thick, it offers a 60-hour power reserve and is rated to withstand shocks of up to 5,000 G.
What is the price of the Bianchet Tonneau UltraFino Black Ceramic?
The Tonneau UltraFino Black Ceramic is priced at CHF 80,500, excluding taxes.
What exactly is the Golden Line on this Bianchet watch?
The Golden Line is a structural component of the case, not a decorative appliqué. Crafted from 18K rose gold, it sits beneath the bezel and creates a fine seam between the architectural layers of the black ceramic case, tracing the tonneau silhouette as the wrist moves.
Is the Bianchet Tonneau UltraFino Black Ceramic suited to daily wear?
Black high-tech ceramic is noted for its lightness, resistance and contemporary character, and the UT01 calibre is engineered for shock resistance up to 5,000 G. The watch is also supplied with a quick-release rubber strap alongside the ceramic bracelet, giving the wearer flexibility across occasions.
Where was the Bianchet Tonneau UltraFino Black Ceramic first shown publicly?
The timepiece made its first public appearance at SIAR Mexico, the premier Haute Horlogerie exhibition in Latin America, in October 2026.
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