The Corum Admiral 42 is a distinctive nautical-design watch, but “Admiral 42” does not identify one set of specifications. The Japanese-listed A395/03447 is 9.50 mm thick and rated to 50 m, while other documented 42 mm Automatic references are 10.30 mm thick and rated to 100 m. Confirm the reference before judging fit, water resistance or price.
Which Corum Admiral 42 is this review about?
Corum has used the Admiral 42 name for multiple references, and their specifications are not interchangeable. This review separates the Japanese-market listing for A395/03447 from the 2022 Admiral 42 Automatic release and the A395/04299 family described in Corum’s 2024 catalogue.
Check the reference printed on the case, warranty card or product listing. If a seller identifies a watch only as “Admiral Legend 42,” ask for the full reference and clear images of the caseback, dial and strap or bracelet before relying on any specification or price.
What are the specifications of A395/03447?
| Specification | Corum Japan listing |
|---|---|
| Reference | A395/03447 |
| Case diameter | 42 mm |
| Case thickness | 9.50 mm |
| Case and bezel | Stainless steel case with blue PVD bezel |
| Dial | Blue |
| Movement | Automatic CO 395 caliber |
| Functions | Date |
| Power reserve | 42 hours |
| Water resistance | 50 m / 5 atm |
| Crystal | Anti-reflective sapphire |
| Strap and buckle | Alligator strap; folding buckle |
| Strap dimensions | 21/18 mm |
| Listed price | ¥726,000 including tax on Corum Japan’s listing; this is market-specific listing information, not a guarantee of current stock or price. |
These figures are from Corum Japan’s A395/03447 product listing. In particular, its 50 m water-resistance rating and 9.50 mm thickness should not be substituted with figures from another Admiral 42.
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How do other Admiral 42 references differ?
| Reference or source group | Case dimensions | Movement and functions | Water resistance | Price context |
|---|---|---|---|---|
| A395/03447, Corum Japan listing | 42 mm diameter; 9.50 mm thick | Automatic CO 395; date; 42-hour reserve; frequency not stated in the listing | 50 m / 5 atm | ¥726,000 including tax on the Japan listing; availability not established |
| Six Admiral 42 Automatic variants in Corum’s 2022 launch release | 42 mm; thickness not stated in the release | CO 395 automatic, 4 Hz; date at 3 o’clock and small seconds at 6 o’clock; 42-hour reserve; sapphire display back | 100 m; unit notation not stated in the release | At launch: CHF 4,200 for alligator strap, CHF 4,400 for steel bracelet and CHF 7,200 for steel-and-gold versions |
| A395/04299 and related references in Corum’s 2024 catalogue | 42.00 mm diameter; 10.30 mm thick | CO 395 automatic, 4 Hz / 28,800 vph; hour, minute, small seconds and date; 42-hour reserve; sapphire caseback | 100 m / 10 ATM | Not stated in the 2024 catalogue specifications cited here |
The launch prices are historical recommended prices from 2022, not current quotes. Case and dial materials vary among the catalogue references. Corum’s 2022 launch release and 2024 consumer catalogue document those separate versions.
How big does the Admiral 42 wear?
A 42 mm diameter gives the watch a substantial nominal footprint, and the Admiral’s 12-sided case makes that outline more visually assertive than a conventional round case of the same stated width. Diameter alone cannot establish whether it will fit well: wrist shape, lug-to-lug length and how the strap articulates also matter, and the cited product information does not provide a lug-to-lug measurement.
The A395/03447 listing’s 9.50 mm thickness is relatively slim on paper for an automatic watch, whereas the A395/04299 family is listed at 10.30 mm. That 0.80 mm difference is real between those published specifications, but neither number predicts comfort on every wrist. Try the exact reference if fit is a deciding factor.
What does the Admiral design signify?
Corum dates the first Admiral watch to 1960 and says the early watches had square cases. According to the brand, the collection was reimagined in 1980 with a dodecagonal case and colored sailing pennants. These details give the watch its recognizable maritime identity; they are Corum’s account of its own history, not an independent historical assessment.
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Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →For the 2022 Automatic models, Corum describes outlined nautical pennants around the dial, minute indexes, applied hour markers, luminous skeletonized Dauphine hands, a date window at 3 o’clock and subsidiary seconds at 6 o’clock. The brand says its Grenadier fendu dial motif was designed in-house in La Chaux-de-Fonds in 2019 and appeared on the Admiral 42 Automatic for the first time in 2022. The 2022 release’s dial description should not automatically be applied to A395/03447 or every other reference.
What movement does the Corum Admiral 42 use?
The A395/03447 listing identifies an automatic CO 395 caliber with a 42-hour power reserve and date. The listing does not state its frequency or indicate a display caseback. Corum’s 2022 release describes other Admiral 42 Automatic variants with the CO 395 running at 4 Hz, a 42-hour reserve and a sapphire display back; the 2024 catalogue lists 4 Hz / 28,800 vph for A395/04299 and related references.
Rank #2
- Series:Admiral's Cup
- Movement:Automatic
- Case Diameter (mm.):33
- Case Thickness (mm.):16
- Bezel Material:Aluminum
Those published specifications establish the movement family and stated reserve, but they are not a substitute for independent timing or durability testing. No hands-on test results are available here, so performance in a particular example cannot be assessed from the specification sheet alone.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What water resistance should you expect?
Use the rating for the exact reference: A395/03447 is listed at 50 m / 5 atm, while the 2022 release and 2024 catalogue describe other 42 mm variants at 100 m or 100 m / 10 ATM. The higher rating belongs to those documented models, not to the Admiral 42 name as a whole.
Water-resistance ratings are not a promise that an older or used watch remains sealed. For any watch exposed to water, ask a qualified service provider to verify condition and seals; the cited specification pages do not establish the present condition of an individual watch.
What strap fits the A395/03447?
Corum Japan lists strap dimensions of 21/18 mm for A395/03447, corresponding to a 21 mm end and 18 mm buckle end. A replacement strap query in that size is a reasonable starting point, not confirmation that any 21/18 mm strap will fit. Verify the lug width, buckle width, attachment, clasp and reference compatibility with the seller or watchmaker before ordering. Do not assume those dimensions apply to other Admiral 42 references.
Is the Corum Admiral 42 worth buying?
It is worth considering if you want a recognizable, angular sports-watch design with sailing imagery rather than a discreet, conventional round dial. The 42 mm case, pennant graphics and subsidiary-seconds layout on the documented 2022 variants give the collection a specific visual character; whether that is appealing is a matter of taste.
The main buying risk is not a hidden complication but reference confusion. Before comparing prices or deciding whether a seller’s description is accurate, match the reference to the case dimensions, water rating, dial and strap or bracelet. Treat Corum Japan’s ¥726,000 listing as a Japan-market reference point and the 2022 CHF figures as launch-period prices, not as evidence of today’s availability or market value. Corum’s current Admiral collection page highlights newer 36 mm and 39 mm references; that alone does not confirm whether any particular 42 mm model is still available. For a purchase, ask an authorized Corum retailer or specialist to confirm exact-reference availability and warranty terms.
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