Bianchet Unveils the B 1.618 Ultrafino: Redefining Ultra-Thin Sports Luxury

The world of haute horlogerie has a compelling new entrant with Bianchet's latest creation, the B 1.618 Ultrafino. This remarkable timepiece represents a significant evolution in the brand's portfolio, introducing their first automatic flying tourbillon movement in an impressively slim profile designed for everyday wear.

Golden Proportions, Perfect Balance

Continuing Bianchet's signature design philosophy, the Ultrafino adheres to the golden ratio (1.618) that has defined the brand's aesthetic identity. The iconic tonneau-shaped case maintains these harmonious proportions while achieving a remarkably thin profile that doesn't compromise on durability or performance.

What sets the Ultrafino apart is its new ultra-thin UT01 caliber. Crafted from titanium, this automatic flying tourbillon movement represents a technical triumph, balancing the complexity of a tourbillon mechanism with the practical requirements of daily wear. The engineering behind this caliber allows the watch to withstand shocks of up to 5,000Gs while maintaining a svelte profile that sits comfortably on the wrist.

Two Distinct Expressions

The B 1.618 Ultrafino will be available in two compelling variations. The openworked model reveals the intricate hand-finished UT01 movement, allowing owners to appreciate the craftsmanship and technical complexity that defines this timepiece. For those preferring a more classic appearance, the dial version showcases Bianchet's exclusive Golden Diamond pattern, providing a distinctive aesthetic while maintaining the watch's sophisticated character.

Both versions feature a beautifully executed golden rotor decorated with interlacing Fibonacci spirals—another nod to the mathematical harmony that inspires the brand. Beyond its aesthetic appeal, the movement delivers a practical 60-hour power reserve, ensuring the watch remains ready for wear even after a weekend off the wrist.

Everyday Luxury Performance

Despite its refined appearance and complex mechanism, the Ultrafino is built for daily wear. Water-resistant to 5 ATM, it provides practical protection against the elements while maintaining its elegant profile. This balance of performance and aesthetics speaks to Bianchet's understanding of modern luxury—where technical excellence and wearability are equally important.

For those familiar with Bianchet's previous offerings like the Flying Tourbillon Sport GMT B 1.618 and Flying Tourbillon Grande Date B1.618, the Ultrafino represents a natural evolution. It maintains the brand's commitment to the golden ratio in design while introducing a new level of technical refinement in a more accessible everyday format.

The wearing experience of a Bianchet timepiece has always been characterized by comfort and visual harmony. The Ultrafino appears poised to enhance this reputation with its ergonomic case design and balanced proportions.

A Promising Addition

As we await the opportunity to handle and test the B 1.618 Ultrafino, initial impressions suggest Bianchet has successfully navigated the challenging territory of ultra-thin sports watches. By combining robust engineering with refined aesthetics, the Ultrafino promises to be a compelling option for collectors who appreciate technical innovation and distinctive design in a wearable package.

The Bianchet B 1.618 Ultrafino represents the increasingly rare combination of genuine horological innovation and practical wearability—a watch designed not just to impress in theory but to delight in daily use.​​​​​​​​​​​​​​​​

Check out our previous articles on Bianchet: Flying Tourbillon Sport GMT and the Flying Tourbillon Grand Date

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