When Hublot sets its sights on the future, it doesn’t just whisper innovation, it screams it in neon green. And this year, that scream materialized into one of the boldest horological statements we’ve seen in recent memory: the Hublot Big Bang Tourbillon Automatic Green SAXEM. It’s not just a timepiece; it’s a translucent mechanical marvel that redefines what a luxury skeleton watch can be.
This isn’t your average tourbillon or sapphire experiment. With only 18 pieces worldwide, this Green SAXEM watch blends breakthrough material science with high-precision watchmaking and the unmistakable flair of Hublot.
If you’re serious about haute horlogerie, this is a piece that demands your full attention.
What Is SAXEM? Hublot’s Material Masterstroke
In typical Hublot Big Bang fashion, the brand didn’t just create a colored sapphire case and call it a day. Instead, they reached into the world of aerospace and satellite technology to deliver something unprecedented: SAXEM (short for Sapphire Aluminium Oxide and Rare Earth Mineral). It takes the robustness and brilliance of sapphire crystal and levels up with enhanced luminosity, stability, and chromatic depth.
Compared to traditional synthetic sapphire, SAXEM boasts a cubic crystalline structure, which results in better light reflection and a deeper saturation of color. This isn’t just a new shade of green, it’s an entirely new breed of transparency. The bold, glossy neon-green case of the Big Bang Tourbillon Automatic isn’t painted or treated; it’s green to its very core.
And it’s not the first time Hublot has dabbled in SAXEM, either. After debuting neon yellow and blue variants, this Green SAXEM watch may just be their most visually striking yet. It’s not only beautiful but highly scratch-resistant, thermally stable, and built for the kind of tough love collectors give their daily drivers.
Case & Architecture: A Translucent Beast in 44mm
Sized at 44mm across and 14.4mm thick, the case commands attention without overpowering the wrist. It showcases the tourbillon in full view while also inviting the eye to explore every element inside—down to the individual wheels and bridges.
The green is radiant, almost radioactive in sunlight, and the transparency creates a depth effect that amplifies the inner workings. It’s finished with polished surfaces that bounce light at every angle. Don’t let the color fool you: this is a heavyweight in both presence and craftsmanship.
The Movement Inside Hublot Green SAXEM
At its core lies the Calibre MHUB6035, a fully automatic tourbillon movement developed in-house. What makes it unique is the micro-rotor placement: it’s visible from the dial side, offering full kinetic transparency. Three sapphire bridges hold everything together in an almost invisible web of tension and balance.
With a 72-hour power reserve, this engine is built for real-world wear, not just static display. The 21,600 VPN beat rate ensures accuracy, while the open design gives collectors that spine-tingling view of the tourbillon at 6 o’clock, a hypnotic reminder of how finely calibrated horology can be.
This isn’t just a watch; it’s a moving sculpture of high horological performance.
Strap System & Wearability
Every detail on the Big Bang Green SAXEM is tailored for the collector who lives on the edge. The watch ships with three interchangeable straps:
A classic black rubber strap
A transparent green rubber strap to match the case
A Velcro strap for high-adrenaline activities
Thanks to Hublot’s One-Click strap change system, you can swap between them with zero tools and maximum efficiency. The titanium folding buckle and Velcro options ensure security and lightness, maintaining wearability for both the gala dinner and the yacht deck.
A Limited Edition Masterpiece: Only 18 Worldwide
That’s right. Only 18 pieces exist. This watch isn’t just rare; it’s unicorn-level exclusive. It was unveiled at LVMH Watch Week 2025, further establishing Hublot’s commitment to the “Art of Fusion” and its reputation for audacious experimentation.
The Green SAXEM Tourbillon is also a tribute to 20 years of Big Bang, making it more than just a timepiece; it’s a historical marker in the brand’s disruptive journey.
Available exclusively through Hublot boutiques and a select few trusted luxury watch retailers, including La Maison Monaco in Canada, this piece is non-negotiable for serious collectors looking to own a chapter in Hublot’s evolution.
Why Buy Hublot Big Bang Tourbillon Automatic Green SAXEM
Hublot isn’t chasing tradition. It’s defining a new one. The Hublot Big Bang Tourbillon Automatic Green SAXEM embodies the brand’s DNA: radical materials, avant-garde design, and uncompromising performance.
It speaks to a new generation of collectors who aren’t afraid to be seen, and who understand that horology is as much about innovation as it is about heritage. From its luminous green case to its 120-hour caliber and skeletonized beauty, this is not a watch for the faint of heart—it’s for those who dare.
