TUDOR
Ref. M79000B-0001
Black Bay 54 37mm
Ref. M79000B-0001
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The Black Bay 54 37mm makes an immediate impression with its vivid blue dial and matching bezel, a striking combination that feels both bold and effortlessly refined.
Revealed at Watches & Wonders 2026, this latest release from TUDOR may well be the purest modern expression of the Black Bay collection to date, distilling the line’s celebrated heritage into its most balanced and versatile form. Its aesthetic balance is where the watch truly excels. The sunray-brushed blue dial and bezel deliver a look that feels simultaneously vintage-inspired and thoroughly modern, while TUDOR’s signature snowflake hands, first introduced on the brand’s dive watches in 1969, reinforce its rich diving heritage.
Beneath the surface, the Black Bay 54 is powered by the Manufacture Calibre MT5400, a COSC-certified movement offering outstanding precision and reliability. The movement provides an impressive 70-hour power reserve and supports a robust 200m water resistance, making it every bit the capable dive watch.
The M79000B-0001 is elevated by its robust 3-link stainless steel bracelet, equipped with TUDOR’s signature T-fit clasp for effortless micro-adjustments on the go. A subtle yet highly practical innovation, it reflects TUDOR’s unwavering commitment to creating timepieces that balance refined design with everyday versatility, built to perform flawlessly, whether in daily wear or on your next adventure.
| Brand | TUDOR |
|---|---|
| Product Reference | M79000B-0001 |
| Product Type | Watch |
| Collection | Black Bay |
| Sub-collection | Black Bay 54 |
| Case Diameter | 37mm |
| Case Material | Stainless Steel |
| Dial Colour | Blue |
| Crystal | Sapphire |
| Strap Type | Bracelet |
| Clasp Type | T-Fit Clasp |
| Strap Material | Stainless Steel |
| Movement | Manufacture Calibre MT5400 (COSC) |
| Power Reserve | 70 Hours |
| Water Resistance | 200m / 660ft |
| Warranty | 5 Years |
| Michael Spiers ID | 007-4090 |
Delivery is made by Royal Mail Special Delivery and should reach you within 1-3 working days, excluding Bank Holidays and weekends.
Size Guide
Choosing the right ring size ensures maximum comfort and the perfect fit. If you already own a ring that fits well, you can easily use it as a reference. Otherwise, follow the simple options below to find your correct size.
If you do not know your ring size, we recommend visiting one of our showrooms, where our friendly and knowledgeable team can help you find the right ring size for you.
Request an AppointmentUK Ring Size Chart
| Size | UK Size |
|---|---|
| 01 | B |
| 02 | D |
| 03 | E-F |
| 04 | F |
| 05 | F-G |
| 06 | G |
| 07 | H |
| 08 | I |
| 09 | J |
| 10 | J-K |
| 11 | K-L |
| 12 | L |
| 13 | M-N |
| 14 | N-O |
| 15 | O-P |
| 16 | P |
| 17 | Q |
| 18 | Q-R |
| 19 | R |
| 20 | S |
| 21 | S-T |
| 22 | T-U |
| 23 | U-V |
| 24 | V |
| 25 | W |
| 26 | X |
| 27 | X-Y |
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