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Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →The TUDOR Black Bay Ceramic (reference M7941A1ACNU-0001) pairs a 41 mm black ceramic case and matching ceramic bracelet with the brand’s Master Chronometer-certified Manufacture Calibre MT5602-U. TUDOR lists a 70-hour power reserve and 200 m (660 ft) water resistance. Those are manufacturer specifications—not independent test results or observations of how this particular watch wears.
What are the TUDOR Black Bay Ceramic specs?
TUDOR’s official specification page identifies the full-ceramic watch as reference M7941A1ACNU-0001. The following are published specifications from TUDOR, not independent measurements.
| # | Preview | Product | Price | |
|---|---|---|---|---|
| 1 |
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Tudor Black Bay Ceramic Automatic Black Dial Men's Watch M79210CNU-0001 | $5,749.99 | Buy on Amazon |
| 2 |
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TUDOR Black Bay Ceramic | $6,500.00 | Buy on Amazon |
| 3 |
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Ceramic Blue Black Bay | $5,650.00 | Buy on Amazon |
| 4 |
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Tudor Black Bay 54 Automatic Chronometer Black Dial Men's Watch M79000N-0001 | $4,619.99 | Buy on Amazon |
| 5 |
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Tudor Black Bay P01 Prototype Watch M70150-0001 | $4,250.00 | Buy on Amazon |
| Specification | TUDOR’s stated details |
|---|---|
| Reference | M7941A1ACNU-0001 |
| Case | 41 mm matt black ceramic with a micro-blasted finish |
| Thickness and lug width | 13.6 mm thick; 21 mm lug width |
| Water resistance | 200 m (660 ft), as rated by TUDOR |
| Bezel | Unidirectional rotatable bezel in black-PVD-treated steel, with a 60-minute graduated black ceramic disc |
| Dial and crystal | Charcoal, sunray-finish domed dial; sapphire crystal |
| Movement | Manufacture Calibre MT5602-U, self-winding with a bidirectional rotor system; TUDOR says it is COSC- and METAS-certified |
| Power reserve | 70 hours, according to TUDOR |
| Bracelet and clasp | Matching full black ceramic bracelet with TUDOR’s proprietary dual folding clasp design |
What does Master Chronometer certification mean?
TUDOR describes METAS Master Chronometer certification as covering a watch’s precision, resistance to magnetic fields, waterproofness, and power reserve. The brand’s METAS certification explainer says qualification includes precision checks at two temperatures, in six positions, and at two power-reserve levels: 100% and 33%. It also describes a functional test in a 15,000-gauss magnetic field and checks of the stated waterproofness and power reserve. TUDOR says Swiss Made status and COSC movement certification are prerequisites.
TUDOR’s Black Bay Ceramic press document states that a qualifying watch must function within a daily variation range of 0 to +5 seconds. This is a certification criterion described by TUDOR, not a timing result for an individual Black Bay Ceramic sample.
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- Tudor Black Bay Ceramic Automatic Black Dial Men's Watch M79210CNU-0001
How accurate is the Black Bay Ceramic?
The stated 0 to +5 seconds per day is the tolerance TUDOR gives for qualification under its explanation of the certification; it should not be read as a guarantee that every individual watch will gain exactly that amount in everyday wear. The press document contrasts that range with COSC’s stated −4/+6 seconds per day and TUDOR’s internal −2/+4-second standard for its Manufacture Calibre models. These are the standards as presented by TUDOR, not independent measurements of this reference.
Is the Black Bay Ceramic waterproof?
TUDOR rates reference M7941A1ACNU-0001 to 200 m (660 ft) and includes waterproofness in the METAS certification scope it describes. The rating is the manufacturer’s published specification; it does not establish the condition of any specific watch or substitute for checking that watch’s seals and service history before swimming or diving.
Rank #2
- Transferable 5-Year Warranty: No Registration or Maintenance Checks Needed
What is established—and what requires hands-on review?
The published dimensions and materials describe the watch, but they cannot establish how it feels on a particular wrist. No firsthand observations or tests are available here for comfort, perceived weight, bracelet adjustment, clasp feel, dial legibility in changing light, actual timekeeping, or scratch and impact behavior over time. Those judgments require direct examination and testing; the specifications alone do not answer them.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Guarantee
TUDOR lists a five-year transferable guarantee with no registration or periodic maintenance checks required. Guarantee terms can change or vary by market, so confirm the current terms that apply to the watch and place of purchase.
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Quick Recap
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- Tudor Heritage Black Bay Black Dial Men's Watch M70150-0001
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- Tudor Black Bay 54 Automatic Chronometer Black Dial Men's Watch M79000N-0001
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- Case Material: Ceramic
- Case Size: 41mm Black Ceramic Case
- Case Back: Open, Sapphire Crystal
- Watch Collection: Daring Watches - Black Bay Ceramic
- Dial Color: Blue
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.
