This review covers the standard steel Breitling Superocean Automatic 46, reference A17378E71C1S1—the blue-dial, blue-rubber-strap configuration listed on Breitling’s US site. It is based on the manufacturer’s specifications, not hands-on testing. Other A17378 references use different dial or strap/bracelet configurations, and the Black Steel version is a separate watch with substantially different specifications.
What the standard steel Superocean Automatic 46 offers
The A17378 is a large, mechanically simple dive watch on paper: a 46 mm steel case, automatic Caliber 17, a bidirectional bezel with a security lock, and a stated water-resistance rating of 300 m. Breitling’s launch material dates the model to June 30, 2022, and describes its design as drawing on the brand’s earlier “Slow Motion” dive-watch codes. That is Breitling’s design history and positioning, rather than an independent assessment.
The current US reference covered here is A17378E71C1S1, with a blue rubber strap. Breitling’s 2022 launch release also lists black- and blue-dial references, in rubber-strap and steel-bracelet configurations.
Specifications of the A17378 steel model
| Specification | Manufacturer-listed detail |
|---|---|
| Case | Stainless steel; 46 mm diameter, 13.22 mm thick, and 52.29 mm lug-to-lug in Breitling’s June 30, 2022 launch specifications. The current US product page confirms 46 mm and 13.22 mm. |
| Movement | Breitling Caliber 17, self-winding mechanical; COSC-certified in the launch specifications. The current listing gives 28,800 vibrations per hour, 26 jewels, and approximately 38 hours of power reserve. |
| Water resistance | 30 bar / 300 m for the standard steel configuration. Breitling lists a screw-locked crown with two gaskets and a screwed caseback. |
| Bezel | Bidirectional, with ceramic inlay and a security lock, according to the launch specifications for this 46 mm model. |
| Dial and crystal | Black or blue dial options in the launch range, Super-LumiNova indexes and hands, and cambered sapphire crystal glareproofed on both sides. |
| Strap or bracelet | Launch options include black or blue rubber straps sized 24/20 mm with folding clasp, or a steel bracelet with folding clasp. The cited US blue-rubber listing gives a 24 mm lug width. |
| Warranty | The current US listing states a two-year international warranty and says online registration may extend it by up to two years. Check terms for the market where you are buying. |
These are manufacturer specifications, not independent measurements or test results. No independent rate or power-reserve test, long-term durability assessment, or on-wrist comfort report is established here.
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- Polished Stainless Steel Case and Bracelet, Case Diameter: 44mm
- Blue Dial with Index Hour Markers
- Breitling Caliber B20
- Self-winding Automatic Movement, COSC Chronometer Certified
- 200 Meters / 660 Feet Water-Resistant
How big does the Superocean 46 wear?
The most useful fit figures are not just the 46 mm diameter: Breitling’s 2022 launch specification gives a 52.29 mm lug-to-lug span and 13.22 mm thickness. The diameter and long span make trying it on sensible if you are sensitive to overhang or bulk. Dimensions alone cannot establish comfort, and this review does not claim a wrist-fit test.
Strap choice also affects how the watch sits and feels, but does not change the case dimensions. The current US reference uses a 24 mm blue rubber strap; the launch range included rubber and bracelet options. Before ordering an aftermarket strap, confirm compatibility for the exact reference, attachment style, and clasp rather than relying only on nominal width.
Rank #2
- ⌚Automatic Slef-Wind Watch:The precision movement is equipped with fully automatic winding, stable ball bearings, 21,600 times per hour, built-in 21 synthetic diamonds, 45 hours of energy storage, and more than 10 years of use.
- ⌚Classic 6 Hand Dial Design:OLEVS meticulously designed 4 calendar functions of year/month/week/day to meet all customer needs, a multi-function watch with multiple times.The classic bottom moon phase window is a classic watch for gentleman men.
- ⌚Luxury 316L Stainless Steel Strap:Solid stainless steel watch bracelet, hidden butterfly pushed button, ventilate, prevent perspiration, quality assurance.Two adjustment tools are provided to easily adjust the strap length.
- ⌚30ATM Waterproof:Three-degree nano-level sealed waterproof, ultra-high waterproof performance, innovative and enhanced anti-fog, 30 meters strong pressure waterproof,suitable for everyday life waterproofing, such as washing hands, doing housework, and briefly soaking in water.
- ⌚OLEVS Warranty Service:We provide 30 days free returns,2 years product high-quality assurance for the automatic watch.If you have problems during the use of the wristwatch,please feel free to contact us. We will offer you a professional service!
Movement, bezel, and diving specifications
Caliber 17
Breitling lists a self-winding Caliber 17 with approximately 38 hours of reserve. The launch release identifies the movement as COSC-certified, while the current US listing specifies 28,800 vibrations per hour and 26 jewels. Certification and published reserve are specifications; they do not substitute for an independent accuracy or reserve test of an individual watch.
Bezel and legibility
For the 46 mm model, Breitling specifies a bidirectional bezel with a security lock and ceramic inlay. The direction matters: bezel operation varies across the broader Superocean range, so this description should not be generalized to every Superocean. Breitling says the hands and indexes use Super-LumiNova and are intended to support underwater readability; no lume performance was independently assessed.
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- WATER-RESISTANT: these water-resistant men's dive watches are ISO scuba-approved to depths of 200 meters
- AUTOMATIC: these self-winding, automatic men's watches are powered by your movement, with a power reserve of 41 hours
- STAINLESS STEEL: features a durable 43.8mm stainless steel watch case and bracelet.
- LUMIBRITE DISPLAY: this men's automatic watch features a highly-legible display with LumiBrite hands and markers
- 4R35 CALIBER: equipped with the reliable caliber 4R35 automatic movement, this accurate men's watch keeps precise time
Water resistance
The standard steel A17378 is rated by Breitling to 30 bar / 300 m. The listed screw-locked crown with two gaskets and screwed caseback are part of the manufacturer’s specification. A depth rating is not a guarantee that a particular used watch remains sealed: condition and servicing affect an individual watch’s water resistance.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Standard steel versus Black Steel
“Black Steel” is a distinct configuration, not another name for the standard steel A17378. Breitling’s separate M17368D71C1S1 Black Steel listing specifies DLC-coated stainless steel, a thickness of 16.85 mm, and 2,000 m water resistance. It also lists approximately 38 hours of power reserve. Those figures belong to that reference and should not be attributed to the 300 m standard steel watch.
Rank #4
- Round watch featuring corrugated unidirectional bezel, luminous hands/markers, and magnified date window at 3 o'clock
- 40 mm, Length: 210mm, 23k gold-plated stainless steel case with mineral dial window. Movement Caliber: NH35A
- Japanese automatic movement with analog display
- Gold & Stainless steel tone bracelet with foldover clasp with safety closure
- Water resistant to 200 m (660 ft): In general, suitable for professional marine activity and serious surface water sports, but not scuba diving.
| Configuration | Case material and thickness | Stated water resistance | Source |
|---|---|---|---|
| Standard steel A17378E71C1S1 | Stainless steel; 13.22 mm thick | 300 m | Breitling US product listing; launch dimensions from Breitling’s June 30, 2022 release |
| Black Steel M17368D71C1S1 | DLC-coated stainless steel; 16.85 mm thick | 2,000 m | Breitling US product listing |
Is the Breitling Superocean Automatic 46 worth buying?
The case for the standard steel A17378 is its combination of a large 46 mm format, 300 m rating, ceramic-inlay bezel with a security lock, and COSC-certified automatic movement in Breitling’s launch specifications. It is a plausible choice for someone seeking those traits in a prominent steel dive watch, particularly if the 46 mm diameter and 52.29 mm lug-to-lug fit comfortably.
The main buying caution is fit: the published dimensions are substantial, and there is no basis here for promising that it will wear comfortably on a particular wrist. Decide which exact reference and strap or bracelet you want, then compare that model with alternatives on case diameter and lug-to-lug, thickness, bezel operation, certification and reserve, material, warranty, and current local price. Breitling’s 2022 release provides design context and specifications, not independent evidence of comfort, accuracy, or long-term durability.
For the exact blue-rubber reference, consult Breitling’s US product page for the current configuration and warranty information. Confirm local availability, price, tax basis, and warranty terms at the time of purchase.
Quick Recap
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