Check out the MP-11 14-Day Power Reserve Black Sapphire, a leap forward in haute horlogerie crafted by Hublot. With only 30 pieces worldwide, this masterpiece blends avant-garde engineering with state-of-the-art materials to deliver an exceptional experience for the discerning collector.
Table of contents
Bold Innovation: Movement & Performance
At the heart lies the in-house manufacture calibre HUB9011, a manually wound, skeletonised movement featuring seven series-coupled barrels that deliver a staggering approximate 336-hour (14-day) power reserve.
What’s truly rare: to transfer energy from the horizontal axis of the barrels to the vertical hour/minute display, Hublot deploys a 90° helical gear “endless screw” an uncommon mechanism in traditional watchmaking.
This dedicated architecture positions the MP-11 as an engineering marvel.

Case & Material Excellence
Sapphire Crystal Case
The 45 mm case is entirely crafted from polished black synthetic sapphire crystal, showcasing Hublot’s mastery in merging transparent material with protective design.
This not only provides full visibility of the inner workings but also brings robust scratch-resistance and durability usually reserved for metal or ceramic cases.
Bezel, Dial & Strap
- Bezel: also polished black sapphire crystal.
- Dial: sapphire crystal dial allowing a skeleton view of the seven barrels in action.
- Strap: black-lined rubber for comfort and modern style, coupled with deployant buckle crafted from black ceramic and black-plated titanium.

Specifications Highlight
- Size: 45 mm diameter.
- Water Resistance: 30 metres / 3 ATM (soaking not advised).
- Reference: 911.JB.0140.RX for this specific variant.
Design DNA & Wearability
Though 45 mm in diameter, the transparency of the sapphire case reduces visual bulk and emphasises the skeletal movement. The architecture of the seven horizontal barrels is laid out in elegant symmetry, and the vertical gear train visible at 10 o’clock creates a dramatic visual on the dial.
On the wrist, the piece is a conversation starter its uniqueness undeniable.

Collector Appeal & Limited Edition Status
With only 30 examples produced globally, this model is among the rarest within Hublot’s portfolio.
For serious collectors, the MP-11 Black Sapphire delivers:
- Extraordinary technical achievement
- Transparent case innovation
- Elite exclusivity
Such credentials ensure strong desirability and long-term value potential (though we don’t predetermine investment outcomes).
Pros & Cons: In-Depth Look
Pros
- Unmatched power reserve: 14 days of autonomy sets a high benchmark.
- Material innovation: full sapphire crystal case offering transparency + protection.
- Movement architecture: seven barrels plus uncommon 90° helical gear system.
- Limited production: only 30 pieces = exclusivity.
- Modern legacy: aligns with high horology trends of visible mechanics + bold aesthetics.
Cons
- Price: understandably very high given engineering and materials.
- Water resistance modest: 30 m is suitable for light splashes only not a diver’s watch.
- Size: 45 mm may be large for smaller wrists, though design mitigates some bulk.
- Service requirement: Complex movements often require specialist servicing cost and availability need consideration.

Why This Piece Stands Apart
What truly differentiates the MP-11 Black Sapphire is the fusion of transparency and mechanics. While many high-end watches showcase skeletonised movements, few expose them through a full sapphire case. The use of seven barrels is also dramatic: such extended reserve combined with visible use of barrels laid in series is rare even in independent watchmaking.
The visual element watching the barrels unwind over days is a unique ownership experience. Few watches deliver the narrative of “wind once and wear for two weeks” while also offering such a striking design.
Styling & Context
Wear this piece with formal attire or smart casual its bold character fits a board room or a luxury event equally. The black sapphire case allows the watch to appear almost “invisible” in certain light, letting the mechanics take centre stage. It pairs well with dark suits, crisp white shirts, or minimalist ensembles where the watch becomes the talking point.
Maintenance & Longevity Notes
- Regular servicing by an authorised Hublot watchmaker recommended (movement complexity demands expertise).
- Avoid heavy water exposure despite the 30 m rating sapphire case is robust but not designed for diving.
- Store unwound when not in use to maintain barrel tension and movement health.
Thoughts
The MP-11 14-Day Power Reserve Black Sapphire is one of the most technologically advanced and visually arresting watches available today. For collectors seeking a bold statement, technical prestige, and rarity, this timepiece delivers on every front. It isn’t just a watch it’s a horological experience, a testament to modern craftsmanship, and a future icons in the making.
