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The Hublot Oceanographic 4000 is rated to 4,000 metres, but that figure, Hublot’s reported 5,000-metre-equivalent pressure test and a reviewer’s limited underwater observations are three different things. The 48 mm King Power-family watch is an imposing specialist diver; the available hands-on account describes ordinary underwater checks, not a 4,000-metre dive.
What the Oceanographic 4000 is—and what the name covers
Hublot introduced the Oceanographic 4000 in 2011 in association with Monaco’s Oceanographic Museum. It belongs to the 48 mm King Power family, with extreme water resistance and a large case central to its identity. But “Oceanographic 4000” is not a single, uniform specification: Hublot’s collection records include distinct references, materials, movements and functions.
The GPHG record identifies reference 731.QX.1140.RX as a limited series of 500. Its listed specifications are a 48 mm diameter, 21.9 mm thickness, automatic winding, a 42-hour power reserve, chronograph functions and 4,000 m water resistance. The record also says Hublot spent 18 months on research, development and testing; that is a development claim reproduced in the model description, not an independent assessment. GPHG’s Oceanographic 4000 record
Which reference are you looking at?
Check the reference before applying a movement, material, complication or edition number to a particular watch. Hublot lists configurations that differ in those details:
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- Compatible Models: 44.5mm Hublot Big Bang Luna Rossa 301.CM.131.RX.LUN06 , 301-CM-131-RX-LUN06, 301/CM/131/RX/LUN06, 301CM131RXLUN06 watches which has 25mm at lugs and 22mm at the buckle
- Detailed Sizes: Lug Size: 25mm; Lug Smaller Size: 19mm; Width at Buckle: 22mm; Length: 100/80mm
- High-quality rubber and stainless steel watch band & clasp.
- Package Including: 1 set (2 rubber strap) And 1 Clasp
- Your Satisfaction Is Our Highest Priority. Pls Contact Us If You Have Any Questions, We Will Try Our Best To Serve For You.
| Reference | Case and components | Movement and functions | Size and resistance | Edition |
|---|---|---|---|---|
| 731.QX.1140.RX | GPHG record does not specify the materials in the cited specification list | Automatic; chronograph; 42-hour power reserve | 48 mm diameter; 21.9 mm thick; 4,000 m | Limited series of 500, according to GPHG |
| 731.QX.1123.NR.EX, Oceanographic Exo 4000 | King Power titanium case with carbon-fibre components | HUB1401 self-winding; date; 42-hour reserve | 48 mm; 4,000 m / 400 ATM | Limited edition of 100, according to Hublot |
| 731.NX.1190.RX, Oceanographic 4000 Titanium | Titanium case | HUB4160 self-winding chronograph; 42-hour reserve | 4,000 m / 400 ATM; diameter and thickness are not stated on Hublot’s cited collection page | Limited edition of 200, according to Hublot |
The variant details come from Hublot’s diving collection listing; the 731.QX.1140.RX specifications come from the GPHG record. These figures should not be transferred from one reference to another. An independent Dive into Watches overview also cautions that some variant images may show pre-series details.
4,000 metres rated, 5,000 metres reported as a test equivalent
The model is rated to 4,000 m. Separately, Hublot’s 2011 launch presentation, as reported by WatchProSite, said the watch’s seal was tested in a Roxer tank to a pressure equivalent to 5,000 m and cited a 6.5 mm sapphire crystal. Those are manufacturer presentation claims reported by the publication; the available sources do not include an independent laboratory report. A pressure-test equivalent is not a 5,000 m operating rating, and it should not be described as one. WatchProSite’s 2011 launch report
Rank #2
- Unique Dial Design: Inspired by the lava flow after a volcanic-eruption, the dial features an irregular texture created by the interplay of red lava and black earth, offering a unique and striking visual experience.
- Stainless Steel & Butterfly Clasp: Crafted from high-quality stainless steel for durability and corrosion resistance. The stylish butterfly clasp ensures a secure and comfortable fit on the wrist.
- Japanese Movement & 10ATM Water Resistance: Equipped with a reliable Japanese movement for precise timekeeping. This silver wristwatch is water-resistant up to 10ATM, making it suitable for daily wear, including swimming and cold showers.
- Sapphire Crystal & Super-Luminous Function: Features a scratch-resistant sapphire crystal with an anti-reflective coating for clear visibility. The super-luminous hands and markers ensure easy time reading in the dark.
- Commitment to Excellence: Established in 1995, BERNY is dedicated to delivering impeccable quality and customer satisfaction. Our responsive customer service team is always here to assist you.
What the hands-on review actually observed
A 2012 review describes a loan of roughly a week and explicitly says the reviewer did not descend to 4,000 m. The underwater experience was limited to checking overall legibility, operating the bezel while wearing gloves and observing the luminous material. That account offers a short-use impression of those functions; it is not evidence of a deep-pressure test or a personal test by this writer. PC-Driss’s 2012 review
WatchProSite’s launch report also attributes praise for the watch to HSH Prince Albert II of Monaco, describing it as beautiful, robust and fitting for the Oceanographic Museum. That is an opinion, not technical evidence about construction or depth performance. WatchProSite’s report and attributed remarks
Rank #3
- Made of non-allergic natural resin, waterproof, soft, light, durable, comfortable to wear
- It is suitable for Hublot Big Bang 25 * 19 * 22mm interface watch band , not for other watches
- It is very important to choose the correct model. To avoid the trouble caused by the return and exchange of goods, if you have any questions about the model and size of the watch, please feel free to contact us
- Package included: 1 * Rubber strap (without metal buckle), 1 * tool kit, easy replacement with our free tools. The watch has a new look! It is not the original and is a good substitute
What to verify when comparing or buying one
For a specific example, identify its reference and compare the details against that reference’s record rather than relying on the family name alone. The cited sources do not establish a current price, present availability, Amazon inventory or the authenticity of any particular watch.
Quick Recap
Rank #4
- Compatible With: Hublot Big Bang
- Size:17*26mm; Length: 116/88mm
- This Strap is made of Highest Quality Silicone Rubber
- Package Includes: one set (2) rubber strap(with logo)
- Your Satisfaction Is Our Highest Priority. Pls Contact Us If You Have Any Questions, We Will Try Our Best To Serve For You.
- Match the reference number to the case and bezel materials, movement, functions and stated edition.
- Use the 21.9 mm thickness only for reference 731.QX.1140.RX; the cited Hublot listing does not state a thickness for 731.NX.1190.RX.
- Distinguish the 4,000 m rating from Hublot’s reported test to pressure equivalent to 5,000 m.
- For imagery, keep in mind Dive into Watches’ warning that some variant images may show pre-series details.
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.
