Bianchet’s Rotondo UltraFino Rose Gold brings skeletonised tourbillon watchmaking, architectural case design and precious-metal luxury into one beautifully refined expression!
Bianchet may have a shorter history compared to other established watchmakers, but the brand has quickly made a name for itself by creating stunning watches themed around skeletonisation, tourbillons, architecture, and designs shaped around mathematical proportions.
One of the brand’s collections that defines all these traits in one is the Rotondo UltraFino . Released during Watches & Wonders 2026, the Rotondo collection is important because it takes Bianchet’s distinctive open-worked design language and places it into a more classical circular case. Looking at Bianchet’s current catalogue, outside of this latest Rotondo release, the case shape has been primarily tonneau. And while this shape feels more sculptural and avant-garde, the Rotondo gives this same technical philosophy a cleaner and potentially more versatile form.
The latest update to the Rotondo UltraFino is a new rose gold version, which, for me, brings a warmer and more luxurious dimension to the line. What makes this watch special is that even with its rose gold execution, the timepiece doesn’t lose its essence, as it still offers 100 metres of water resistance and is engineered to withstand 5,000G of shock resistance.
Rose Gold Architecture Meets Skeletonised Contrast
The case of the Rotondo UltraFino measures 39.5mm x 8.95mm thick, making it not only impressively slim for an automatic flying tourbillon on an integrated bracelet, but also a wearable size that caters to a variety of wrist sizes. The entire case is crafted in 18k 5N solid rose gold, which, as mentioned earlier, gives the Rotondo a much warmer and more luxurious character than the existing titanium and carbon versions. What this precious metal version does, however, is add weight and richness to what was otherwise a design based on technical aesthetics.
While it may be presented in a more traditional circular design, it is not without its sculptural lines, which not only enhance the watch’s character but also stay true to the brand’s architectural design language. The case design combines flowing curves with sharper faceted surfaces, reflecting the brand’s “Form Above All” philosophy.
The case also alternates between satin-brushed surfaces and polished bevels, which helps to highlight the sculptural look of the case even further. Paired with the 18K rose gold case, this contrast in finishing becomes even more expressive, allowing the case to play with light beautifully.
While the case material is the new feature of this Rotondo, the highlight is still the skeletonised dial. The beautiful signature architecture of the Rotondo UltraFino dial is retained in this model, where mechanical artistry and technical precision come together.
The execution of the dial is beautifully balanced too, with the barrel at 12 o’clock countering the one-minute flying tourbillon at 6 o’clock. This gives the dial strong vertical symmetry, which helps showcase that this open-worked design has been carefully thought out, feeling intentional rather than being visually chaotic.
What I also like about this skeletonised dial is the use of black PVD bridges. Not only do they create a darker aesthetic for the dial, which helps the 18K rose gold case stand out nicely, but they also improve readability. A skeletonised watch like this is certainly a busy dial, and one where the time can sometimes be difficult to read. However, with the contrast between the black PVD bridges and rose gold hands, the display remains clear, making the time easier to read.
An Ultra-Thin Flying Tourbillon Built For Performance
Inside this Rotondo UltraFino Rose Gold edition sits Bianchet’s proprietary UR01 self-winding calibre, which has been developed specifically for the Rotondo collection. Bianchet describes the movement as an “in-house creation developed from the ground up to express the brand’s vision of an ultra-thin automatic flying tourbillon”.
The movement is only 3.85mm thick, which helps keep the overall case thickness to just 8.9mm. The UR01 delivers sturdy performance too, with a 60-hour power reserve and accuracy of 3Hz (21,600 VpH).
Initial Thoughts
With the Rotondo UltraFino collection being only just a few months old, this latest rose gold edition feels like a smart evolution. The Rotondo already made the brand’s skeletonised tourbillon language feel a little more wearable and refined, and the move into full rose gold gives that idea much more luxury appeal.
I, for one, welcome this rose gold edition, as it gives the watch a warmer visual character, and with the precious material plays with light across the polished bevels and satin-brushed surfaces, adding another layer of richness to an already highly architectural design.
This is a watch that is precious enough to feel special, technical enough to remain true to the brand, and refined enough to show that the Rotondo collection has real long-term potential.
Bianchet Rotondo UltraFino
Reference & Specifications
| Feature | Specification |
|---|---|
| Reference | RDUFFTSKRGBKI |
| Dimensions | 39.5mm case diameter x 53mm lug-to-lug x 8.9mm thickness |
| Case | 18kt 5N Solid Rose Gold |
| Dial | Skeletonised dial with black PVD Bridges |
| Crystal | Sapphire with anti-reflective coating |
| Caseback | Closed, engraved |
| Movement | Automatic Calibre UR-01 |
| Power Reserve | 60 hours |
| Beat Rate | 3Hz / 21,600VpH |
| Water Resistance | 100m / 10bar |
| Strap/Bracelet | Integrated 18kt 5N Solid rose gold bracelet. Quick-release strap allows for interchangeable straps, with a second strap choice of vulcanized rubber. |