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The Hublot King Power Alinghi 4000, reference 731.QX.1140.NR.AGI12, was a 2012 limited-edition watch created as Hublot renewed its partnership with Team Alinghi. Its defining specifications were a 48 mm matte carbon-fibre case and a stated water-resistance rating of 400 ATM, or 4,000 metres. The launch announcement described a numbered run of 100 pieces; it does not establish the watch’s present-day availability.
What the King Power Alinghi 4000 is
Hublot announced the watch in May 2012 under reference 731.QX.1140.NR.AGI12. La Cote des Montres reported that the series was limited to 100 numbered pieces, from 01/100 through 100/100. That is a production-run figure, not evidence that any particular example is currently for sale.
The model was presented as a diver, not as the earlier Hublot King Power Alinghi chronograph. In a contemporaneous article, Monochrome also compared it with Alinghi’s earlier Audemars Piguet Royal Oak Offshore Team Alinghi collaboration, noting the use of carbon fibre. The available information does not provide a full, matched specification comparison of those watches.
Case, movement and stated specifications
La Cote des Montres’ 8 May 2012 announcement gives the following details. Monochrome independently corroborates several of the headline specifications, including the diameter, movement and stated water-resistance rating.
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- Compatible with Hublot Big Bang King Power 48mm: Designed specifically for 48mm Hublot Big Bang King Power Ceramic watches
- 3 Colors Available for Customization: Choose from Black, Brown, and Blue to match your watch style and daily outfits, offering a personalized look for your timepiece.
- Soft & Durable PVC Rubber Construction: Made of high-quality soft PVC rubber, the strap offers excellent resilience, flexibility, and long-lasting durability for daily wear.
- Perfect Length & Comfort Fit: The strap size; Lug Width: 28mm；Buckle width: 24mm Length: Long part: 100mm；Short part: 81mm；Width of straps: 24mm, with evenly spaced holes for easy adjustment, ensuring a comfortable fit for most wrist sizes.
- Aftermarket Replacement Strap (With Markings): This is a non-original replacement strap with decorative markings (not official brand logos), ideal for replacing worn or damaged original bands, and easy to install.
| Specification | Reported detail |
|---|---|
| Reference | 731.QX.1140.NR.AGI12 |
| Case diameter | 48 mm |
| Case and bezel | Matte carbon fibre; the bezel has six H-shaped black PVD titanium screws |
| Crystal and inserts | Anti-reflective sapphire crystal and black composite-resin inserts |
| Caseback | Alinghi logo |
| Movement | Automatic mechanical HUB1401, with 180 components and 23 jewels |
| Power reserve | Approximately 42 hours, as stated in the 2012 launch announcement |
| Water resistance | 400 ATM, which the announcement equates to 4,000 metres |
| Straps and clasp | Adjustable black rubber and Nomex strap with red stitching, plus a second black rubber strap; black ceramic King Power 48 mm ardillon buckle |
| Thickness | Not stated in the cited 2012 launch announcement or Monochrome’s review |
| Edition | 100 numbered pieces, according to the 2012 launch announcement |
What the 4,000-metre rating does—and does not—tell you
The 400 ATM / 4,000-metre figure is the rating published in the 2012 launch announcement. The reviewed material does not include an independent test report or testing protocol, so the figure should be understood as the manufacturer’s stated specification rather than an independently verified result.
A very high depth rating is a headline capability, not a requirement for ordinary sailing or recreational diving. Monochrome’s author argued that ratings above 100 metres are not practically necessary for most people, even in rough sailing; that is the author’s view, not a regulator’s standard or a universal rule.
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- VERIFY YOUR WATCH MODEL & MEASURE THE CORRECT SIZE USING A RULER – Watch Parts Are Model and Size Specific. Please Verify Compatibility Before Purchasing.
- Compatibility & Size: 28mm Leather Band Strap, compatible with 48mm Hublot Big Bang Ceramic F1 King Power (Black).
- Ensure Perfect Fit: Verify the size, color, and model compatibility with your specific watch before purchasing to ensure a perfect fit and avoid returns or exchanges.
- Compatibility Check: Double-check your watch's requirements and compatibility details to ensure the product meets your needs. This will help you avoid any issues with returns or exchanges.
- Aftermarket Product: This is an aftermarket/generic made to original factory specs for a precise fit.
Why Alinghi was part of the story
Hublot’s launch announcement said it had partnered with Alinghi in 2009 and 2010 for the 33rd America’s Cup, and was renewing the relationship for the team’s 2012 international challenges. It named the Extreme 40 and Décision 35 boats, and said the watch was unveiled on 4 May after regattas at Société Nautique de Genève.
The announcement framed the relationship around sailing, performance, technical innovation, Swiss Made expertise and Swiss colours. It identified Ernesto Bertarelli as an Alinghi principal and Jean-Claude Biver as Hublot Chairman. Bertarelli was quoted welcoming Hublot “back on board Alinghi”; Biver described the partnership as a way to promote Swiss values and technology. These are statements reproduced in the launch communication, not independently conducted interviews.
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- VERIFY YOUR WATCH MODEL & MEASURE THE CORRECT SIZE USING A RULER – Watch Parts Are Model and Size Specific. Please Verify Compatibility Before Purchasing.
- Compatibility & Size: 28mm Leather Band Strap, compatible with 48mm Hublot Big Bang Ceramic F1 King Power (Black Red).
- Ensure Perfect Fit: Verify the size, color, and model compatibility with your specific watch before purchasing to ensure a perfect fit and avoid returns or exchanges.
- Compatibility Check: Double-check your watch's requirements and compatibility details to ensure the product meets your needs. This will help you avoid any issues with returns or exchanges.
- Aftermarket Product: This is an aftermarket/generic made to original factory specs for a precise fit.
The collaboration offers a specific example of a Swiss watchmaker linking a product to a Swiss sailing team and to the “Swiss Made” identity. It should not be taken as evidence of how the entire Swiss watch industry viewed the partnership, or of whether Hublot and Alinghi remain partners today.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Availability, thickness and identifying an example
The sources establish the original reference and the 100-piece edition, but do not establish current production status, inventory, or a current price. Hublot’s current “Return to Antikythera” page lists related Oceanographic King Power models, including an EXO 4000 with a 48 mm case, 4,000 m / 400 ATM rating and HUB1401 movement. That is a related model, not the Alinghi reference, and it does not establish availability of 731.QX.1140.NR.AGI12: Hublot’s Return to Antikythera collection page.
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- COMPATIBLE REPLACEMENT STRAP – Designed for compatible use with Hublot. Please verify your watch model and 29x24mm before purchase.
- 29X24MM SIZE FORMAT – Built to match the strap dimensions shown in the title for secure attachment and proper everyday fit.
- BLACK RUBBER – Flexible, durable, and comfortable for daily wear, with a sporty look that refreshes your watch.
- REPLACEMENT SOLUTION – Ideal for refreshing a worn strap while maintaining a clean and updated look on your watch.
- STRAP ONLY – Buckle, clasp, and mounting hardware are not included unless otherwise stated. Please reuse your existing hardware if needed.
For a collector search, use the exact reference, 731.QX.1140.NR.AGI12, alongside the model name. The cited 2012 specifications give a 48 mm diameter but no case thickness, so the thickness cannot be confirmed from these sources. When evaluating a specific pre-owned example, check that the reference matches, and assess provenance, condition, box and papers, service history, and the seller’s authentication claims.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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