Bianchet has just launched the B 1.618 UltraFino, redefining the standards of barrel-shaped sports watches with its extreme slimness and exquisite craftsmanship. This timepiece is only 8.9mm thick, with a case made of titanium, featuring the brand’s first automatic flying tourbillon movement, the UT01, which is just 3.85mm thick and weighs only 8 grams. The design of the UT01 movement perfectly adheres to the golden ratio (1.618), showcasing the mathematical aesthetics and mechanical artistry from the bridge structure to the geometric lines of the rotor. The UltraFino is not only a high-end watch but also an ideal choice for everyday wear, equipped with a 5000G shock resistance and 5 ATM water resistance, balancing elegance and durability.


UltraFino offers two designs: the Skeleton edition and the Golden Diamond textured dial version. The Skeleton version showcases every detail of the UT01 movement, featuring a slim flying tourbillon coupled with a gold oscillating weight that creates an exquisite three-dimensional effect. Meanwhile, the Golden Diamond textured dial draws inspiration from the golden ratio, reinterpreting the classic Clou de Paris pattern for a visually understated yet luxurious appeal. Moreover, Bianchet has specially designed a seamless titanium metal bracelet for this timepiece, ensuring a fluid connection between the barrel-shaped case and the strap for an enhanced wearing experience. Additionally, a natural vulcanized rubber strap can be chosen, paired with a titanium folding clasp for a different style of wear.


The UT01 movement is not only ultra-thin, but it also pushes the limits of performance. The flying tourbillon stands at just 2.66mm in height, ensuring stable operation. The movement is specially designed to enhance energy transmission efficiency, maintaining over 60 hours of power reserve. Additionally, the gold rotor features a Fibonacci spiral design, optimizing winding efficiency. The overall craftsmanship of the movement meets high-end watchmaking standards, with titanium main plates and bridges treated with sandblasting and brushing, and the edges polished with a manual chamfer, showcasing a distinct visual appeal. As the gold rotor spins, the interplay of matte and polished surfaces creates a dynamic display of light and shadow, adding movement and an artistic vibe to the timepiece.


The Bianchet B 1.618 UltraFino sets a new benchmark for contemporary barrel-shaped sports watches with its outstanding design, golden ratio aesthetics, and high-performance tourbillon movement. Whether it’s the Skeleton version or the Golden Diamond dial, each piece showcases a unique mathematical beauty and mechanical precision, making it an unmissable masterpiece for collectors and high-end watch enthusiasts.
B 1.618 UltraFino Dial Price: Approximately HK$481,000 (excluding tax)
B 1.618 UltraFino Skeleton Price: Approximately HK$525,000 (excluding tax)