11 January 2023


 Big Bang Tourbillon Automatic Yellow Neon Saxem

“It has taken us almost three years of research, after the MP-11 Emerald Green, to develop a new colour fit for our Big Bang and that would be totally transparent and completely resistant. Once again, Hublot is pushing the possibilities of technology and aesthetics and fuses them to create a unique neon yellow manufacture piece.”



Reproducing a translucent case in a bright, fluorescent shade of neon yellow may seem like a simple idea. But, in fact, it was incredibly complex to achieve. The yellow is a powerful, bright neon colour which almost seems to glow from the inside, like a fluorescent material. An intense fluorescent shade of acid yellow, citrus-like in its quality. To meet this highly technical challenge, Hublot had to search for a solution in space technology. In fact, SAXEM was developed in the field of satellite technology. A unique material that had also been used in 2019 for the Big Bang MP-11.


At the time, Hublot had crafted it in emerald green. This time, the goal was to achieve a brand-new neon yellow colour. It also had to meet the strict requirements of the Nyon Manufacture for its sapphire watches: complete transparency and incredible resistance. After three years of research and development, the challenge was met and overcome with the Big Bang Tourbillon Automatic Yellow Neon SAXEM.

 Big Bang Tourbillon Automatic Yellow Neon Saxem
 Big Bang Tourbillon Automatic Yellow Neon Saxem

What is SAXEM? It stands for "Sapphire Aluminium oXide and rare Earth Mineral". It is an alloy of aluminium oxide, the basic component of sapphire, with rare earth elements like thulium and holmium as well as chromium. The resulting material is ultra-resistant and endowed with a brilliance that is greater than that of sapphire. The absence of tension within the material ensures greater stability in terms of shaping, whereas the cubic crystalline structure guarantees the same shade and intensity of colour, regardless of the angle from which the case is viewed. The fully polished neon yellow SAXEM offers a bold contrast with the bezel's six H-shaped screws and with the crown, all in polished and micro-blasted titanium.


In terms of movement, the Big Bang Tourbillon Automatic Yellow Neon SAXEM is powered by the HUB6035 self-winding Manufacture calibre. Hublot has chosen the most difficult technical route, self-winding using a micro-rotor, the only way to avoid concealing the back of the movement as a conventional rotor would have done. On top of that, the Manufacture has chosen to skeletonise the entire calibre. This is a stratospheric feat of watchmaking which pushes open worked materials to the limits of their functional resistance, almost nothing remains that would conceal the calibre. Entirely visible and fully laid bare, even its bridges are made from sapphire so that only the beating heart and soul of the watch remain. This heart is the tourbillon, which appears to be suspended in mid-air. This architecture serves to free the piece from any visual clutter. Positioned at 6 o'clock, it offers the technical and hypnotic spectacle of a high-precision Haute Horlogerie piece, designed as a 21st century interpretation: modern, disruptive, dazzling.

Finally, to make it suitable for daily use, the Big Bang Tourbillon Automatic Yellow Neon SAXEM offers a guaranteed 72-hour power reserve – making the piece perfectly weekend-proof.

This timepiece, which will be exclusively available as a limited edition of 50 pieces, comes with a neon yellow textured rubber strap, tailor-made for this watch, complete with a titanium deployant buckle and equipped with the One Click system so that it can be changed immediately with no need for tools.

Online and in Boutique exclusive

Includes a Hublot complete service.

The Hublot Complete Service ensures our select watches continue to move with precision.

technical specifications





44 mm


Polished and Microblasted Yellow Neon Saxem


Polished and Microblasted Yellow Neon Saxem

water resistance

30m or 3 ATM


Sapphire with Anti-reflective Treatment


Sapphire Crystal Dial



HUB6035 Manufacture Automatic Tourbillon Movement

power reserve

72 Hours

strap & clasp


Transparent Yellow Structured Lined Rubber Straps


Titanium Deployant Buckle Clasp