Blancpain Fifty Fathoms Buying Guide: Every Model and Price
The Automatique, Bathyscaphe and limited editions compared — with 2026 retail prices, Caliber 1315 specs and real resale data.
Price context: this guide includes indicative prices from its original publication period. They have not all been refreshed to current quotes. Use the linked primary sources for specifications and policies, and verify prices independently.
- The Fifty Fathoms Bathyscaphe starts at approximately $10,900 retail; the larger Automatique begins around $15,300 in steel
- Every current model runs the in-house Caliber 1315 with a five-day (120-hour) power reserve and silicon balance spring
- Blancpain delivered the first Fifty Fathoms to French Navy combat swimmers in 1953, making it one of the earliest purpose-built dive watches
- Pre-owned Bathyscaphes trade from roughly $6,000 to $10,000; Automatique models range from about $7,700 to $15,000
- Resale values have softened roughly 1.8% on average over the past year, though limited editions and precious metal references hold better
What Is the Fifty Fathoms?
The Blancpain Fifty Fathoms is one of watchmaking’s foundational dive watches. In 1953, Blancpain’s CEO Jean-Jacques Fiechter — himself an avid diver — developed the watch for Captain Robert “Bob” Maloubier and Lieutenant Claude Riffaud of the French Navy’s combat swimmer unit. The name references the depth limit of early diving equipment: fifty fathoms, or roughly 91.45 metres.
Blancpain delivered the Fifty Fathoms to the French military in the same year Rolex introduced the Submariner, making both legitimate claimants to the title of “first modern dive watch.” Blancpain’s case rests on reaching active-duty combat swimmers before Rolex reached civilian retail, though both brands developed their respective watches independently. What is not in dispute: the Fifty Fathoms established the template that every dive watch since has followed — a unidirectional rotating bezel, high-contrast luminous dial, and robust water resistance rated in real diving terms rather than marketing ones.
Today the Fifty Fathoms sits in the upper tier of luxury dive watches, priced between the Omega Seamaster 300M and the Rolex Submariner at the low end, and reaching into six figures for precious metal chronograph variants. It remains a manufactured-in-house watch from a brand that has never used an outsourced movement — a claim very few watchmakers can make.
The Complete Fifty Fathoms Lineup
Blancpain currently produces the Fifty Fathoms across several sub-families, each sharing the same DNA but targeting different wrists and budgets. Here is how the lineup breaks down in 2026.
Fifty Fathoms Automatique
The flagship. At 45mm in diameter and 15.5mm thick, this is a large watch by any standard. The defining visual detail is the sapphire bezel insert — scratch-resistant, chemically stable, and visually distinct from the ceramic bezels used by competitors. Steel versions start at approximately $15,300, with titanium, red gold and sedna gold variants reaching $20,000 to $42,000 and beyond.
Fifty Fathoms Bathyscaphe
The everyday alternative. Named after the deep-sea submersible, the Bathyscaphe trims the case to 43mm (or 38mm for the smaller variant) and swaps the sapphire bezel insert for ceramic. It uses the same Caliber 1315 movement with the same 120-hour power reserve. Steel versions retail around $10,900 (ref. 5000-1110-B52A), making this the entry point to genuine Fifty Fathoms ownership.
Fifty Fathoms Chronographe Flyback
A flyback chronograph in a 45mm case, powered by the Caliber F385, which adds chronograph functionality to the base 1315 architecture. The flyback complication lets divers reset the chronograph hand without stopping it first — operationally useful underwater, where fumbling with pushers costs time. Steel versions retail around $18,500, with red gold variants reaching approximately $42,000.
70th Anniversary and Limited Editions
Blancpain released several 70th Anniversary editions in 2023, including the Act 1 in a steel/titanium configuration and the Act 2 in red gold with a meteorite dial. These carry premiums on the secondary market and are produced in limited quantities. Special editions with military heritage colourways (MIL-SPEC, Nageurs de Combat) also command collector interest, particularly unworn examples with complete documentation.
Specifications and Pricing
The table below covers the core references available in 2026. All retail prices are approximate and vary by region; pre-owned prices reflect indicative secondary-market ranges and are not verified completed-sale figures.
| Model | Case | Caliber | WR | Retail | Pre-Owned |
|---|---|---|---|---|---|
| Automatique Steel | 45mm SS | 1315 | 300m | ~$15,300 | $7,700–$15,000 |
| Automatique Titanium | 45mm Ti | 1315 | 300m | ~$17,500 | $10,000–$14,000 |
| Bathyscaphe Steel | 43mm SS | 1315 | 300m | ~$10,900 | $6,000–$10,000 |
| Bathyscaphe Ceramic | 43mm Ceramic | 1315 | 300m | ~$14,200 | $8,000–$12,000 |
| Bathyscaphe 38mm | 38mm SS | 1315 | 300m | ~$10,900 | $7,000–$9,000 |
| Chronographe Flyback Steel | 45mm SS | F385 | 300m | ~$18,500 | $10,000–$16,000 |
| Chronographe Flyback Red Gold | 45mm RG | F385 | 300m | ~$42,000 | $25,000–$38,000 |
The Bathyscaphe in steel represents the most accessible entry point. At roughly $10,900 retail — and as low as $6,000 pre-owned for older references — it undercuts the Rolex Submariner by a meaningful margin while offering a longer power reserve and an in-house movement with comparable finishing. The Automatique’s 45mm case is the purist’s choice, but most modern buyers will find the 43mm Bathyscaphe more wearable day-to-day.
The Caliber 1315 Movement
The Caliber 1315 is the engine behind every time-and-date Fifty Fathoms in the current range. It is entirely manufactured in-house at Blancpain’s manufacture in Villeret, Switzerland, and it features three mainspring barrels delivering that remarkable 120-hour power reserve. That means you can take the watch off on Friday evening and strap it back on Monday morning without needing to reset the time.
The movement beats at 28,800 vibrations per hour (4 Hz), uses a silicon balance spring for magnetic resistance and long-term stability, and carries a COSC-equivalent level of accuracy, though Blancpain does not submit every watch for official COSC certification. Finishing includes Côtes de Genève on the bridges, a snailed mainplate, and a hand-engraved rotor visible through the exhibition caseback.
| Feature | Cal. 1315 (Blancpain) | Cal. 3235 (Rolex) | Cal. 8800 (Omega) |
|---|---|---|---|
| Power Reserve | 120 hours | 70 hours | 55 hours |
| Frequency | 28,800 vph | 28,800 vph | 25,200 vph |
| Silicon Balance Spring | Yes | Parachrom (paramagnetic) | Yes |
| Mainspring Barrels | 3 | 1 | 1 |
| METAS Certified | No | Superlative (±2s/day) | Yes (±5s/day total) |
| Exhibition Caseback | Yes | No | Yes |
The 120-hour power reserve is the Caliber 1315’s standout figure. No other luxury dive watch movement in this price range offers five full days of running time. That practicality matters for collectors who rotate watches through a collection — the Fifty Fathoms is ready to wear when you pick it up, while many competitors will have stopped after 48 to 70 hours on the nightstand.
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Fifty Fathoms vs Submariner vs Seamaster 300M
The Fifty Fathoms, Rolex Submariner and Omega Seamaster 300M are the three dive watches most serious collectors consider. Each targets a different buyer.
The Rolex Submariner ($10,250 retail for the no-date 124060) is the default choice for most buyers. At 41mm it wears well on almost any wrist, resale retention sits above 95%, and the Rolex name carries social capital that neither Blancpain nor Omega can match outside watch-collector circles. The trade-off: a 70-hour power reserve, no exhibition caseback, and a design so ubiquitous that it no longer turns heads among enthusiasts.
The Omega Seamaster 300M (~$5,400 retail) is the value play. METAS Master Chronometer certification, a helium escape valve, ceramic dial and bezel, and a Co-Axial escapement — all for roughly half the price of a Submariner. Resale retention is lower, typically 70–85%, but the watch itself is technically impressive for the money. Read more in our dive watches guide.
The Blancpain Fifty Fathoms Bathyscaphe (~$10,900 retail) splits the difference on price but leads on power reserve (120 hours) and horological finishing. It is the watch collector’s dive watch: less common than either competitor, with an exhibition caseback that shows off a genuinely impressive in-house movement. The trade-off is weaker resale retention — roughly 55–75% — and a 43mm case that wears larger than its diameter suggests due to the thick bezel.
Resale Value and Market Trends
Blancpain does not carry the same resale premium as Rolex or even Omega’s sport models. Over the past 12 months, Fifty Fathoms values have declined an average of roughly 1.8% across all references, according to secondary-market tracking data. That said, individual references vary considerably.
What holds best: Limited editions, especially the 70th Anniversary Act 1 and military-heritage references (MIL-SPEC, Nageurs de Combat), retain the highest percentage of retail. Precious metal variants also hold better in absolute terms, though the initial outlay is far higher. The standard steel Automatique with the sapphire bezel trades at roughly 60–80% of its retail price pre-owned.
What loses most: The Bathyscaphe in standard steel configurations depreciates the steepest in percentage terms, sometimes losing 40–45% from retail on the secondary market. This is arguably good news for pre-owned buyers — a $10,900 watch available for $6,000–$7,000 pre-owned is a compelling proposition for the movement and build quality on offer.
If you are buying a Fifty Fathoms primarily as a financial asset, reconsider. For watches that hold their value, Rolex and Patek Philippe remain the safer choices. The Fifty Fathoms is a watch you buy because you want to own a genuinely excellent dive watch with serious horological credentials, not because you expect to sell it for more than you paid.
Buying Advice
Try the 43mm Bathyscaphe First
The 45mm Automatique is a serious commitment. Even if you normally wear 42–44mm watches, the Fifty Fathoms Automatique wears larger than its diameter due to the thick bezel and tall case. Visit an authorized dealer to try both sizes before deciding. The 38mm Bathyscaphe is also worth considering if your wrist is under 7 inches.
Consider Pre-Owned for the Automatique
With the Automatique retailing at $15,300 and pre-owned examples available from roughly $7,700, buying secondary saves 40–50%. The Caliber 1315’s 120-hour power reserve means these movements are robust, and Blancpain’s service intervals are every 4–5 years. Just ensure complete documentation and service history.
Check the Bezel Insert Carefully
The Automatique’s sapphire bezel insert is its most distinctive feature — and its most fragile. Sapphire is scratch-resistant but can chip on hard impacts. Inspect pre-owned examples under magnification for any edge chips. The Bathyscaphe’s ceramic bezel is more impact-resistant but can still crack.
Use Grailr Before You Buy
Photograph any listing with Grailr’s scanner for a suggested identification and indicative price estimate. Compare against current market data and verify the reference number against Blancpain’s own catalogue.
Know Your Authorized Dealers
Blancpain does not sell direct-to-consumer online. Authorized dealers include Swatch Group boutiques, Tourneau/Bucherer locations, and independent jewellers. Unlike Rolex, there is no meaningful waitlist for most Fifty Fathoms references — you can typically walk in and purchase the model you want at retail, which removes much of the grey-market incentive.
Frequently Asked Questions
How much does a Blancpain Fifty Fathoms cost?
The Fifty Fathoms Bathyscaphe starts at approximately $10,900 retail in steel. The larger Automatique starts around $15,300 in steel. Pre-owned Bathyscaphes trade from roughly $6,000 to $10,000 depending on reference and condition.
Is the Fifty Fathoms really the first modern dive watch?
Blancpain delivered the Fifty Fathoms to the French Navy’s combat swimmers in 1953, the same year Rolex introduced the Submariner. Blancpain’s claim rests on the watch reaching military divers first, though both brands developed their dive watches independently around the same time.
What movement does the Fifty Fathoms use?
Current Fifty Fathoms models use the in-house Caliber 1315, a self-winding movement with a silicon balance spring and a 120-hour (five-day) power reserve. It beats at 28,800 vph and carries a COSC-equivalent standard of accuracy.
What is the difference between the Fifty Fathoms and the Bathyscaphe?
The Automatique is the flagship at 45mm with a sapphire bezel insert, while the Bathyscaphe is the everyday alternative at 43mm with a ceramic bezel insert. Both share the Caliber 1315 and 300m water resistance, but the Bathyscaphe sits lower on the wrist and costs roughly $4,000 less at retail.
Does the Fifty Fathoms hold its value?
Fifty Fathoms values have softened roughly 1.8% on average over the past 12 months. Pre-owned Automatique models retain approximately 60–80% of retail, while Bathyscaphes retain 55–75%. Limited editions and precious metal references hold better than standard steel models.
Is the Fifty Fathoms better than the Rolex Submariner?
They serve different collectors. The Submariner is smaller (41mm), has stronger resale value, and costs less at retail ($10,250). The Fifty Fathoms offers a longer power reserve (120 hours vs 70), a more distinctive design, and deeper horological heritage. The Submariner is the safer financial choice; the Fifty Fathoms is the more interesting watch.
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The Bottom Line
The Blancpain Fifty Fathoms is the thinking collector’s dive watch. It won’t hold its value like a Submariner, and it won’t undercut the Seamaster on price. What it offers instead is a genuinely impressive in-house movement with a five-day power reserve, a design rooted in real military diving history, and a level of finishing that justifies the price tag. The Bathyscaphe at $10,900 retail — or as low as $6,000 pre-owned — is the model we recommend for most buyers: it carries the full Fifty Fathoms DNA in a wearable 43mm package. Try one on before you commit to the 45mm Automatique, and consider the secondary market seriously — the depreciation curve works in the buyer’s favour here.
Considering a Fifty Fathoms?
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Scan a Watch NowSources and price context
- Blancpain Fifty Fathoms official collection page — Current models, specifications and reference numbers from the manufacturer.
- WatchCharts Fifty Fathoms Bathyscaphe 5000-1110-B52A market data — Secondary-market price tracking and historical trend data.
These primary sources support the specification and market-data points noted above. Prices and resale percentages elsewhere in this guide are indicative editorial figures, not a verified transaction dataset or guaranteed returns. Confirm the exact reference, region, condition and current quote before buying; asking prices are not completed-sale prices.