n the occasion of Milano Watch Week 2026, Kerbedanz unveils a new and vibrant interpretation of its central flying tourbillon combining the incolor monocrystalline sapphire case with an entirely new Ultraviolet dial.

Especially revealed for the occasion, this new creation brings together transparency, color and mechanical architecture in one of the Maison’s most technically expressive timepieces.

At its heart remains the mesmerizing one-minute central flying tourbillon, the mechanical and visual signature of the Maxima GR8, surrounded by a peripheral display of the hours and minutes. Powered by the automatic KRB-13 caliber, the movement comprises 233 components and 32 jewels, beats at 28,800 vibrations per hour and uses two barrels mounted in parallel to deliver approximately 65 hours of power reserve.

With this latest interpretation, Kerbedanz introduces Ultraviolet into the Maxima GR8 universe, a color chosen for its intensity, contemporary character and ability to create a striking dialogue with the absolute transparency of sapphire.

The vivid ultraviolet dial appears almost suspended within the transparent case, allowing the architecture of the watch to remain fully visible from every angle. Light travels through the monocrystalline sapphire and interacts with the dial, movement and tourbillon, constantly transforming the perception of the watch depending on its surroundings.

The result is a Maxima GR8 that feels both technically complex and visually immediate: transparent yet intensely colored, architectural yet alive.

“Milano Watch Week felt like the perfect setting to reveal this new expression of the Maxima GR8. Milano has a unique relationship with design, color and personal style. With the Ultraviolet dial, we wanted to bring an unexpected energy to the transparency of sapphire while keeping the central tourbillon as the absolute focal point of the watch. It is a very contemporary interpretation of Kerbedanz.” - said Vahé Vartzbed, CEO of Kerbedanz.

Machining a watch case from monocrystalline sapphire represents one of contemporary watchmaking’s most demanding exercises. Beyond its spectacular transparency, sapphire requires extremely precise machining, polishing and finishing in order to achieve the complex geometry of the Maxima GR8 while preserving the optical purity of the material.

Here, transparency is not simply decorative. It becomes an integral part of the design, removing the traditional visual boundary between case and movement and revealing the mechanical construction from virtually every perspective.

The 39 mm diameter gives this technically ambitious construction a remarkably contemporary proportion on the wrist, while the domed sapphire crystal further accentuates the depth and three-dimensional character of the composition.

The visual center of the Maxima GR8 remains its one-minute central flying tourbillon with hand chamfered.

Powered by the automatic KRB-13 caliber, the movement comprises 233 components and 32 jewels, operates at 28,800 vibrations per hour, and features two barrels mounted in parallel to provide a power reserve of approximately 65 hours.

The peripheral indication of the hours and minutes leaves the center of the watch entirely dedicated to the tourbillon, allowing its constant rotation to become both the mechanical and emotional focal point of the composition.

The open-worked dial, exclusively designed, manufactured and hand-decorated for Kerbedanz, further reinforces the architectural depth of the piece.

The Maxima GR8 39mm Incolor Sapphire Ultraviolet Dial makes its debut during Milano Watch Week 2026, held from October 2 to 4 at Palazzo Mezzanotte, Piazza Affari, in the heart of Milano.

For Kerbedanz, Milano provides a particularly relevant backdrop for this new chromatic interpretation, bringing together Swiss Haute Horlogerie, contemporary design and a distinctly expressive approach to color.

The Maxima GR8 39mm Incolor Sapphire is produced in an exceptionally limited series of only 50 pieces worldwide, all featuring an incolor monocrystalline sapphire case and offered with a selection of dial colors, including Sepal Blue, Baby Blue, Emerald Green, and now Ultraviolet.

TECHNICAL SPECIFICATIONS

• Functions: Hour & minute (peripheral display); central one-minute tourbillon

• Movement: Automatic, KRB-13 calibre, central flying tourbillon with variable inertia balance wheel; 233 components; 32 jewels; two barrels in parallel; 28,800 vph (4 Hz); 65-hour power reserve

• Case: Incolor monocrystalline sapphire, 39 mm diameter, double-sided anti-reflective domed sapphire crystal, water-resistant to 30 meters (3 bar/100 ft).

• Dial: Openworked, exclusively designed, manufactured and hand-decorated by Kerbedanz

• Strap: Rubber strap with titanium deployant buckle and interchangeable system

• Recommended retail price: CHF 330’000 – excluding taxes.